Laxmi

The Proposal Class 10 MCQ Questions with Answers English Chapter 11

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We have compiled NCERT MCQ Questions for Class 10 English First Flight Chapter 11 The Proposal with Answers Pdf free download. MCQ Questions for Class 10 English with Answers were prepared according to the latest question paper pattern. Practicing these The Proposal Class 10 English MCQs Questions with Answers really effective to improve your basics and learn all the key concepts.

MCQ Questions for Class 10 English First Flight Chapter 11 The Proposal with Answers

Question 1.
What was the age of Lomov?
(a) 32
(b) 34
(c) 35
(d) 36

Answer

Answer: (c) 35

Question 2.
Who is Lomov?
(a) A farmer
(b) A landowner
(c) A factoryworker
(d) None of the Above

Answer

Answer: (b) A landowner

Question 3.
What did the aunt’s grandmother want in return for meadows?
(a) Cancer
(b) Celiac Disease
(c) Palpitations
(d) None of the Above

Answer

Answer: (c) Palpitations

Question 4.
What is the reason for author’s suffering?
(a) Cancer
(b) Celiac Disease
(c) Palpitations
(d) None of the Above

Answer

Answer: (c) Palpitations

Question 5.
What purpose has Lomov come for?
(a) To run away with Natalya
(b) To propose Natalya
(c) To kill Natalya
(d) To hide with Natalya

Answer

Answer: (b) To propose Natalya

Question 6.
According to Lomov, what defect does squeezer have?
(a) lame
(b) old age
(c) overshot
(d) fat

Answer

Answer: (c) overshot

Question 7.
What is the name of Lomov’s dog?
(a) Guess
(b) Guard
(c) Squeezer
(d) Sweater

Answer

Answer: (a) Guess

Question 8.
What did Natalya offer Lomov?
(a) tea
(b) brakfast
(c) coffee
(d) lunch

Answer

Answer: (d) lunch

Question 9.
How are the Lomovs and Chubukovs related?
(a) friends
(b) cousins
(c) neighbours
(d) business associates

Answer

Answer: (c) neighbours

Question 10.
When does Natalya accept the proposal?
(a) when Lomov went unconscious
(b) when they finished arguing
(c) when he proposed her
(d) when Lomov came back in

Answer

Answer: (a) when Lomov went unconscious

Question 11.
Why did Chubukov think it was a curse to be a father of a grown up daughter?
(a) he had to go to call the man they had just shun out
(b) he had to go to call the man who insulted them
(c) he had to go call tthe man who shouted at them
(d) All of the above

Answer

Answer: (d) All of the above

Question 12.
Who threatened to take the matter to court?
(a) Natalya
(b) Lomov
(c) Chubukov
(d) None

Answer

Answer: (b) Lomov

Question 13.
What explanation did Lomov give for his shouting?
(a) his frustration
(b) his short temper
(c) his palpitations
(d) he can’t stand unfairness

Answer

Answer: (c) his palpitations

Question 14.
What is Lomov’s side of justification about the land?
(a) their land extended till Burnt Marsh
(b) his grandmother always talked about it
(c) his grandmother gave it to her great grandfather’s peasants
(d) both 1 and 2

Answer

Answer: (c) his grandmother gave it to her great grandfather’s peasants

Question 15.
Where do Lomov and Natalya get on the wrong foot?
(a) While talking about the weather
(b) While talking about their land
(c) While talking about their family relations
(d) While the proposal

Answer

Answer: (b) While talking about their land

Question 16.
Who does Chubukov call a “lovesick cat”?
(a) Lomov
(b) himself
(c) his maid
(d) Natalya

Answer

Answer: (d) Natalya

Question 17.
What request did Chubukov think Lomov would make?
(a) ask for her daughter’s hand in marriage
(b) borrow money
(c) borrow land
(d) all of the above

Answer

Answer: (b) borrow money

We hope the given NCERT MCQ Questions for Class 10 English First Flight Chapter 11 The Proposal with Answers Pdf free download will definitely yield fruitful results. If you have any queries related to CBSE Class 10 English The Proposal MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you in no time.

What is Inertia in Physics | Definition, Types – Laws of Motion

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Inertia Definition Physics :
The property of an object by virtue of which it cannot change its state of rest or of uniform motion along a straight line on its own, is called inertia. Greater the mass of a body greater will be its inertia and vice-versa.

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

What is Inertia in Physics | Definition, Types – Laws of Motion

Inertia is of three types:

(i) Inertia of rest Definition:
It is defined as the tendency of a body to remain in its position of rest, i.e., A body at rest remains at rest and can not start moving on its own.

(ii) Inertia of motion Definition:
It is defined as the tendency of a body to remain in its state of uniform motion along a straight line, i.e., A body in uniform motion can neither gets accelerated nor get retarded on its own, also it cannot stop on its own.

(iii) Inertia of direction Definition:
It is defined as inability of a body to change by itself its direction of motion.
Types of Motion in Physics
1. One Dimensional Motion Definition :
If only one out of three coordinates specifying the position of the object changes with respect to time, then the motion is called one dimensional motion or rectilinear motion.

For instance, motion of a block in a straight line, motion of a train along a straight track, a man walking on a level and narrow road and object falling under gravity etc.

2. Two Dimensional Motion Definition:
If only two out of three coordinates specifying the position of the object change with respect to time, then the motion is called two dimensional motion.

A circular motion is an instance of two dimensional motion.

3. Three Dimensional Motion Definition:
If all the three coordinates specifying the position of the object change with respect to time, then the motion is called three dimensional motion. A few instances of three dimension at motion are flying bird, a flying kite, the random motion of gas molecule etc.

Laws of Motion:
There are various laws in Physics that define the motion of the object. When an object is in motion whether it is linear or circular there is some force which is always imposed on it.

What is Inertia of Motion Force
Law of Conservation of Linear Momentum Impulse
Laws of Motion Rocket
Equilibrium of a Particle Weight
Friction Motion on a Rough Inclined Plane
Motion of Bodies in Contact Pulley Mass System

The Sermon at Benares Class 10 MCQ Questions with Answers English Chapter 10

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We have compiled NCERT MCQ Questions for Class 10 English First Flight Chapter 10 The Sermon at Benares with Answers Pdf free download. MCQ Questions for Class 10 English with Answers were prepared according to the latest question paper pattern. Practicing these The Sermon at Benares Class 10 English MCQs Questions with Answers really effective to improve your basics and learn all the key concepts.

MCQ Questions for Class 10 English First Flight Chapter 10 The Sermon at Benares with Answers

Question 1.
What did Kisa Gotami learn in the end?
(a) Love is common
(b) Death is common
(c) War is common
(d) None of the Above

Answer

Answer: (b) Death is common

Question 2.
Where was Budhha born?
(a) South India
(b) North India
(c) West part of India
(d) None of the Above

Answer

Answer: (b) North India

Question 3.
What is the fate of mortals?
(a) They will cry one day
(b) Inevitable death of all.
(c) One day they will run.
(d) None of the Above

Answer

Answer: (b) Inevitable death of all.

Question 4.
What did the Budhha ask the girl for?
(a) handful of mustard seeds
(b) handful of grapes
(c) handful of black pepper
(d) None of the Above

Answer

Answer: (c) At the age of twelve

Question 5.
When was Budhha sent for Schooling?
(a) At the age of eight
(b) At the age of ten
(c) At the age of twelve
(d) At the age of fourteen

Answer

Answer: (c) At the age of twelve

Question 6.
What quantity of Mustard seeds did Buddha ask for?
(a) a sackful
(b) a handful
(c) a pinch
(d) a cup

Answer

Answer: (c) a pinch

Question 7.
How can one save his loved ones from death?
(a) by grief
(b) by crying
(c) by both
(d) none of these

Answer

Answer: (d) none of these

Question 8.
How many more children did Kisa have?
(a) 5
(b) 3
(c) 4
(d) None

Answer

Answer: (d) None

Question 9.
In which city did Buddha deliver his first sermon?
(a) Patna
(b) Benaras
(c) Lumbini
(d) Gaya

Answer

Answer: (b) Benaras

Question 10.
How old was Siddhartha when he renounced the princely life?
(a) 22
(b) 32
(c) 35
(d) 25

Answer

Answer: (d) 25

Question 11.
“Of those who, overcome by death, __________”.
(a) depart from life
(b) become immortal
(c) become free
(d) become dead

Answer

Answer: (a) depart from life

Question 12.
What is the meaning of lamentation?
(a) expression of sorrow
(b) expression of gratefulness
(c) expression of joy
(d) expression of laughter

Answer

Answer: (a) expression of sorrow

Question 13.
What did Buddha tell her about life?
(a) It is troubled
(b) It is brief
(c) combined with pain
(d) all of the above

Answer

Answer: (d) all of the above

Question 14.
How did Kisa feel at first on being unable to find such seeds?
(a) weary
(b) hopeless
(c) disappointed
(d) all of the above

Answer

Answer: (d) all of the above

Question 15.
Which seed did Buddha ask Kisa to bring?
(a) Pumpkin seeds
(b) Mustard seeds
(c) Sunflower seeds
(d) Seesame seeds

Answer

Answer: (b) Mustard seeds

Question 16.
Where did he vow to stay until his enlightenment came?
(a) his palace
(b) under peepal tree
(c) under banyan tree
(d) under a tree

Answer

Answer: (b) under peepal tree

Question 17.
What moved him to seek out enlightenment?
(a) a sick man
(b) an aged man
(c) a monk begging
(d) all of the above

Answer

Answer: (d) all of the above

We hope the given NCERT MCQ Questions for Class 10 English First Flight Chapter 10 The Sermon at Benares with Answers Pdf free download will definitely yield fruitful results. If you have any queries related to CBSE Class 10 English The Sermon at Benares MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you in no time.

Pulley Mass System | Definition, Examples in Physics – Laws of Motion

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Pulley Mass System | Definition, Examples in Physics – Laws of Motion

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

Pulley Mass System Physics:
Determine the acceleration of the masses and the tension in the string.

(i) When unequal masses m1 and m2 are suspended from a pulley (m1 > m2)
Pulley Mass System
m1g – T = m1a, and T – m2g = m2a
On solving equations, we get
\(a=\frac{\left(m_{1}-m_{2}\right)}{\left(m_{1}+m_{2}\right)} g,\)
\(T=\frac{2 m_{1} m_{2}}{\left(m_{1}+m_{2}\right)} g\)

(ii) When a body of mass m2 is placed on a frictionless horizontal surface, then
Pulley Mass System
Mass Pulley System acceleration, a = \(\frac{m_{1} g}{\left(m_{1}+m_{2}\right)}\)

Tension in a Pulley System with Two Masses, T = \(\frac{m_{1} m_{2} g}{\left(m_{1}+m_{2}\right)}\)

(iii) When a body of mass m2 is placed on a rough horizontal surface, then
Pulley Mass System

Acceleration, a = \(\frac{\left(m_{1}-\mu m_{2}\right) g}{\left(m_{1}+m_{2}\right)}\)

Tension in string, T = \(\frac{m_{1} m_{2}(1+\mu) g}{\left(m_{1}+m_{2}\right)}\)

(iv) When two masses m1 and m2 (m1 > m2) are connected to a single mass M as shown in figure, then

Pulley System
m1g – T1 = m1a ……(i)
T2 – m2g = m2a ……(ii)
T1 – T2 = Ma ……(iii)

Acceleration, a = \(\frac{\left(m_{1}-m_{2}\right) g}{\left(m_{1}+m_{2}+M\right)}\)
Tension, T1 = \(\left(\frac{2 m_{2}+M}{m_{1}+m_{2}+M}\right) m_{1} g\)
T2 = \(\left(\frac{2 m_{1}+M}{m_{1}+m_{2}+M}\right) m_{2} g\)

(v) Motion on a smooth inclined plane, then
Pulley mass System
m1g – T = m1a ……(i)
T – m2g sin θ = m2a ……(ii)
Acceleration, a = \(\left(\frac{m_{1}-m_{2} \sin \theta}{m_{1}+m_{2}}\right) g\)
Tension, T = \(\frac{m_{1} m_{2}(1+\sin \theta) g}{\left(m_{1}+m_{2}\right)}\)

(vi) Motion of two bodies placed on two inclined planes having different angle of inclination, then
Pulley mass System

Acceleration, a = \(\frac{\left(m_{1} \sin \theta_{1}-m_{2} \sin \theta_{2}\right) g}{m_{1}+m_{2}}\)
Tension, T = \(\frac{m_{1} m_{2}}{m_{1}+m_{2}}\left(\sin \theta_{1}+\sin \theta_{2}\right) g\)

Laws of Motion:
There are various laws in Physics that define the motion of the object. When an object is in motion whether it is linear or circular there is some force which is always imposed on it.

What is Inertia of Motion Force
Law of Conservation of Linear Momentum Impulse
Laws of Motion Rocket
Equilibrium of a Particle Weight
Friction Motion on a Rough Inclined Plane
Motion of Bodies in Contact Pulley Mass System

Mijbil the Otter Class 10 MCQ Questions with Answers English Chapter 8

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We have compiled NCERT MCQ Questions for Class 10 English First Flight Chapter 8 Mijbil the Otter with Answers Pdf free download. MCQ Questions for Class 10 English with Answers were prepared according to the latest question paper pattern. Practicing these Mijbil the Otter Class 10 English MCQs Questions with Answers really effective to improve your basics and learn all the key concepts.

MCQ Questions for Class 10 English First Flight Chapter 8 Mijbil the Otter with Answers

Question 1.
How does Maxwell get the otter?
(a) by his uncle
(b) by his mother
(c) by his father
(d) by his friend

Answer

Answer: (d) by his friend

Question 2.
What did Mijbil do during the second night?
(a) Came on to Maxwell’s bed soon after midnight.
(b) Run away from Maxwell’s house
(c) Slip away from Maxwell’s hand
(d) None of the Above

Answer

Answer: (a) Came on to Maxwell’s bed soon after midnight.

Question 3.
How would Mij follow the author?
(a) With a lead
(b) Via a thread
(c) Without a lead
(d) None of the Above

Answer

Answer: (c) Without a lead

Question 4.
When did the author travel?
(a) New Year of 1955
(b) New Year of 1956
(c) New Year of 1957
(d) New Year of 1958

Answer

Answer: (b) New Year of 1956

Question 5.
How was Mij to be transported to England?
(a) By packing in a box
(b) On a seat
(c) Through Ship
(d) None of the Above

Answer

Answer: (a) By packing in a box

Question 6.
In the Tigris marshes otters were as common as ____.
(a) bees
(b) lizards
(c) rodents
(d) mosquitoes

Answer

Answer: (d) mosquitoes

Question 7.
What were Mijbil’s favourite toys?
(a) Stones
(b) Marbles
(c) Soft toys
(d) Newspaper

Answer

Answer: (b) Marbles

Question 8.
When the auther saw the otter for the first time, it resembled a ___
(a) dog
(b) dragon
(c) cat
(d) seal

Answer

Answer: (b) dragon

Question 9.
Why were Otters known as Maxwell Otters?
(a) they were found by Maxwell
(b) they are fount at a place called Maxwell
(c) Its the species name in science
(d) None of the Above

Answer

Answer: (a) they were found by Maxwell

Question 10.
What guesses did the Londoners make about what Mij was?
(a) baby seal
(b) squirrel
(c) a hippo
(d) All of the above

Answer

Answer: (d) All of the above

Question 11.
Maxwell called the _____ “the very queen of her kind”.
(a) airhostess
(b) driver
(c) Mijbil
(d) Pilot

Answer

Answer: (a) airhostess

Question 12.
Why did the driver drive through the streets of Basra like a ricochetting bullet?
(a) author was late for his flight
(b) Mijbil had hurt himself
(c) someone was after the driver
(d) All of the above

Answer

Answer: (a) author was late for his flight

Question 13.
How did the airline wanted him to carry Mijbil?
(a) In a separate compartment
(b) In a box
(c) In his bag
(d) None of the above

Answer

Answer: (b) In a box

Question 14.
What is wasted and provoking when left static? (according to the otter)
(a) sand
(b) tea
(c) juice
(d) water

Answer

Answer: (d) water

Question 15.
The otter was brought to the author by _____.
(a) his friend
(b) two Arabs
(c) hotel staff
(d) non of the above

Answer

Answer: (b) two Arabs

Question 16.
What ‘experiment’ did Maxwell think Camusfearna would be suitable for?
(a) to pet a dog
(b) to pet an otter
(c) both of them
(d) none of the Above

Answer

Answer: (b) to pet an otter

Question 17.
Early in the new year of 1956 Maxwell travelled to ____
(a) London
(b) Southern Iraq
(c) India
(d) None of the Above

Answer

Answer: (b) Southern Iraq

We hope the given NCERT MCQ Questions for Class 10 English First Flight Chapter 8 Mijbil the Otter with Answers Pdf free download will definitely yield fruitful results. If you have any queries related to CBSE Class 10 English Mijbil the Otter MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you in no time.

Glimpses of India Class 10 MCQ Questions with Answers English Chapter 7

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We have compiled NCERT MCQ Questions for Class 10 English First Flight Chapter 7 Glimpses of India with Answers Pdf free download. MCQ Questions for Class 10 English with Answers were prepared according to the latest question paper pattern. Practicing these Glimpses of India Class 10 English MCQs Questions with Answers really effective to improve your basics and learn all the key concepts.

MCQ Questions for Class 10 English First Flight Chapter 7 Glimpses of India with Answers

Question 1.
What have the tea plantations been compared to?
(a) A sea of Tea Bushes
(b) A house of Tea Bushes
(c) A continent of Tea Bushes
(d) None of the Above

Answer

Answer: (a) A sea of Tea Bushes

Question 2.
What was ordered by Pranjol?
(a) Two cups of Tea
(b) Two cups of Coffee
(c) Two Chapattis
(d) None of the Above

Answer

Answer: (a) Two cups of Tea

Question 3.
What type of people inhabit this land of rolling hills?
(a) Martial Man
(b) Evergreen Man
(c) Mountain Man
(d) None of the Above

Answer

Answer: (a) Martial Man

Question 4.
Where is Coorg situated?
(a) between Mysore and the coastal town of Bangalore.
(b) between Mysore and the coastal town of Mangalore.
(c) between Mangalore and the coastal town of Bangalore.
(d) None of the Above

Answer

Answer: (b) between Mysore and the coastal town of Mangalore.

Question 5.
Where were the monthly accounts of the baker recorded?
(a) In a copy, with a pencil
(b) On a wall,with a pencil
(c) On a board,with a pencil
(d) None of the Above

Answer

Answer: (b) On a wall,with a pencil

Question 6.
What does the narrator still remember?
(a) Typical fragrance of the loaves
(b) Typical fragrance of the dough
(c) Typical fragrance of the mould
(d) None of the Above

Answer

Answer: (a) Typical fragrance of the loaves

Question 7.
How is the family profession still carried?
(a) By their nephews
(b) By their sons
(c) By their workers
(d) None of the Above

Answer

Answer: (b) By their sons

Question 8.
“You seem to have done your homework before coming,” Pranjol’s father said in surprise. Which homework is he talking about?
(a) Holiday homework
(b) Tuition homework
(c) Knowledge about Assam
(d) All of the Above

Answer

Answer: (c) Knowledge about Assam

Question 9.
What was Dhekiabari?
(a) name of a station
(b) tea garden managed by Pranjol’s father
(c) tea garden managed by Rajvir’s father
(d) name of a hill

Answer

Answer: (b) tea garden managed by Pranjol’s father

Question 10.
The words like ‘chai’ and ‘chini’ are derived from _____.
(a) Indi
(b) China
(c) France
(d) None of the Above

Answer

Answer: (b) China

Question 11.
Was Rajvir a fan of detective stories?
(a) Yes
(b) No
(c) maybe
(d) don’t know

Answer

Answer: (a) Yes

Question 12.
What is canoeing?
(a) travelling in a river in a canoe
(b) travelling in a river in a raft
(c) going down a cliff by sliding down a rope
(d) All of the above

Answer

Answer: (a) travelling in a river in a canoe

Question 13.
What are the activities available in Coorg?
(a) River-rafting
(b) Canoeing
(c) Mountain climbing
(d) All of the above

Answer

Answer: (d) All of the above

Question 14.
_____ river obtains its water from Coorg.
(a) Yamuna
(b) Narmada
(c) Kaveri
(d) Tapi

Answer

Answer: (c) Kaveri

Question 15.
Where is Coorg situated?
(a) Mysore
(b) Mangalore
(c) Karnataka
(d) Kerala

Answer

Answer: (c) Karnataka

Question 16.
_____ was called kabai.
(a) Baker’s dress
(b) baker’s basket
(c) baker’s bamboo
(d) baker’s song

Answer

Answer: (a) Baker’s dress

Question 17.
What did the children long for?
(a) Loaves
(b) bread bangles
(c) banana bread
(d) all of the above

Answer

Answer: (b) bread bangles

Question 18.
What are the bakers known as in Goa?
(a) Pader
(b) Portugese
(c) pekar
(d) Baker

Answer

Answer: (a) Pader

Question 19.
Who is the author of “Coorg”?
(a) Arup Kumar Datta
(b) Lokesh Abrol
(c) Lucio Rodrigues
(d) None of the Above

Answer

Answer: (b) Lokesh Abrol

We hope the given NCERT MCQ Questions for Class 10 English First Flight Chapter 7 Glimpses of India with Answers Pdf free download will definitely yield fruitful results. If you have any queries related to CBSE Class 10 English Glimpses of India MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you in no time.

What is Weight in Physics | Definition, Example – Laws of Motion

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What is Weight in Physics | Definition, Example – Laws of Motion

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

Weight Definition Physics (w):
It is a field force. It is the force with which a body is pulled towards the centre of the earth due to gravity. It has the magnitude mg, where m is the mass of the body and g is the acceleration due to gravity.

w = mg

Normal Reaction
It is a contact force. It is the force between two surfaces in contact, which is always perpendicular to the surfaces in contact.

Tension

  • Tension force always pulls a body.
  • Tension is a reactive force. It is not an active force.
  • Tension across a massless pulley or frictionless pulley remains constant.
  • Rope becomes slack when tension force becomes zero.

Apparent Weight in Lift
(i) When a lift is at rest or moving with a constant speed, then
Weight

The weighing machine will read the actual weight.

(ii) When a lift is accelerating upwards, then apparent weight

R1 = m(g + a)

Weight
The weighing machine will read the apparent weight, which is more than the actual weight.

(iii) When a lift is accelerating downwards, then apparent weight

R2 = m(g-a)

Weight
The weighing machine will read the apparent weight, which is less than the actual weight.

(iv) When lift is falling freely under gravity, then

R2 = m(g-g) = 0

The apparent weight of the body becomes zero.

(v) If lift is accelerating downward with an acceleration greater than g, then body will be lifted from floor to the ceiling of the lift.

Laws of Motion:
There are various laws in Physics that define the motion of the object. When an object is in motion whether it is linear or circular there is some force which is always imposed on it.

What is Inertia of Motion Force
Law of Conservation of Linear Momentum Impulse
Laws of Motion Rocket
Equilibrium of a Particle Weight
Friction Motion on a Rough Inclined Plane
Motion of Bodies in Contact Pulley Mass System

Motion on a Rough Inclined Plane | Definition, Example – Laws of Motion

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Motion on a Rough Inclined Plane | Definition, Example – Laws of Motion

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

Motion of a body on a Rough Inclined Plane
When an object moves along an inclined plane then different forces act on it like normal reaction of plane, friction force acting in opposite direction of motion etc.

Different relations for the motion are given below
Normal reaction of plane, R = mg cos θ and net force acting downward on the block, F = mg sin θ – f
Motion on a Rough Inclined Plane

Acceleration on inclined plane, a = g(sin θ – μ cos θ)
When angle of inclination of the plane from horizontal is less than the angle of repose (α), then
(i) minimum force required to move the body up the inclined plane

F1 = mg (sin θ + μ cos θ)

(ii) minimum force required to push the body down the inclined plane

F2 = mg (μ cos θ – sin θ)

Laws of Motion:
There are various laws in Physics that define the motion of the object. When an object is in motion whether it is linear or circular there is some force which is always imposed on it.

What is Inertia of Motion Force
Law of Conservation of Linear Momentum Impulse
Laws of Motion Rocket
Equilibrium of a Particle Weight
Friction Motion on a Rough Inclined Plane
Motion of Bodies in Contact Pulley Mass System

Motion of Bodies in Contact | Definition, Types – Laws of Motion

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Motion of Bodies in Contact | Definition, Types – Laws of Motion

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

Motion of Bodies in Contact
1. Contact Force Between Two Blocks:
If force F is applied on an object of mass m1, then acceleration of the bodies
Motion of Bodies in Contact
Contact force on m1 = m1a = \(\frac{m_{1} F}{\left(m_{1}+m_{2}\right)}\)
Contact force on m2 = m2a = \(\frac{m_{2} F}{\left(m_{1}+m_{2}\right)}\)

2. Contact Force Between Three Blocks:
If force F is applied on an object of mass m1, then acceleration of the bodies
= \(\frac{F}{\left(m_{1}+m_{2}+m_{3}\right)}\)
Motion of Bodies in Contact
Contact force between m1 and m2
\(F_{1}=\frac{\left(m_{2}+m_{3}\right) F}{\left(m_{1}+m_{2}+m_{3}\right)}\)
Contact force between m2 and m3
\(F_{2}=\frac{m_{3} F}{\left(m_{1}+m_{2}+m_{3}\right)}\)

3. Motion of Two Bodies One Resting on the Other:
(a) The coefficient of friction between surface of A and B be μ. If a force F is applied on the lower body A, then common acceleration of two bodies
Motion of Bodies in Contact
Pseudo force acting on block B due to the accelerated motion,
f’ = ma
The pseudo force tends to produce a relative motion between bodies A and B and consequently a frictional force
f = μ N = μmg is developed.
For equilibrium, ma ≤ μmg or a ≤ μg

(b) Let friction is also present between the ground surface and body A Let the coefficient of friction between the given surface and body A is μ1 and the coefficient of friction between the surfaces of bodies A and B is μ2. If a force F is applied on the lower body A.
Motion of Bodies in Contact

Net accelerating force F – fA = F – μ1 (M + m)g
∴ Net acceleration
\(a=\frac{F-\mu_{1}(M+m) g}{(M+m)}=\frac{F}{(M+m)}-\mu_{1} g\)

Pseudo force acting on the block B,
f’ = ma
The pseudo force tends to produce a relative motion between the bodies A and B are consequently a frictional force fB = μ2 mg is developed. For equilibrium
ma ≤ μ2mg or a ≤ μ2g
If acceleration produced under the the effect of force Fis more than μ2g, then two bodies will not move together.

4. Motion of Bodies Connected by a String:
Motion of Bodies in Contact

Acceleration of the system a = \(\frac{F}{\left(m_{1}+m_{2}+m_{3}\right)}\)
Tension in string
T1 = F
T2 = (m2 + m3) a = \(\frac{\left(m_{2}+m_{3}\right) F}{\left(m_{1}+m_{2}+m_{3}\right)}\)
T3 = m3a = \(\frac{m_{3} F}{\left(m_{1}+m_{2}+m_{3}\right)}\)

Laws of Motion:
There are various laws in Physics that define the motion of the object. When an object is in motion whether it is linear or circular there is some force which is always imposed on it.

What is Inertia of Motion Force
Law of Conservation of Linear Momentum Impulse
Laws of Motion Rocket
Equilibrium of a Particle Weight
Friction Motion on a Rough Inclined Plane
Motion of Bodies in Contact Pulley Mass System

What is Friction in Physics? | Definition, Examples, Types of Friction – Laws of Motion

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Friction Definition Physics:
A force acting on the point of contact of the objects, which opposes the relative motion is called friction.

What is Friction in Physics? | Definition, Examples, Types of Friction – Laws of Motion

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

  • It acts parallel to the contact surfaces.
  • Frictional forces are produced due to intermolecular interactions acting between the molecules of the bodies in contact.

Types of Friction:

  1. Static Friction
  2. Limiting Friction
  3. Kinetic Friction

1. Static Friction Definition:
It is an opposing force which comes into play when one body tends to move over the surface of the other body but actual motion is not taking place.

Static friction is a self-adjusting force which increases as the applied force is increased. Static friction opposes impending motion.

2. Limiting Friction Definition:
It is the maximum value of static friction when body is at the verge of starting motion.

Limiting friction, fs(max) = μlR

where, μl = coefficient of limiting friction and R = normal reaction.
Limiting friction do not depend on area of contact surfaces but depends on their nature, i.e. smoothness or roughness.
Friction

Angle of Friction Definition:
It is the angle which the resultant of the force of limiting friction and the normal reaction(N) makes with the direction of N.

μl = tan θ

Angle of Repose in Friction or Angle of Sliding
It is the minimum angle of inclination of a plane with the horizontal, such that a body placed on it, just begins to slide down.
If angle of repose is a and coefficient of limiting friction is μl, then

μl = tan α

3. Kinetic Friction Definition:
It is an opposing force that comes into existence when one object is actually moving over the surface of other object.
Friction

Kinetic friction (fk) = μk R

where, μk = coefficient of kinetic friction and R = normal reaction.

Kinetic friction is of two types:
(a) Sliding friction
(b) Rolling friction
As, rolling friction < sliding friction, therefore it is easier to roll a body than to slide.

Laws of Motion:
There are various laws in Physics that define the motion of the object. When an object is in motion whether it is linear or circular there is some force which is always imposed on it.

What is Inertia of Motion Force
Law of Conservation of Linear Momentum Impulse
Laws of Motion Rocket
Equilibrium of a Particle Weight
Friction Motion on a Rough Inclined Plane
Motion of Bodies in Contact Pulley Mass System