## Angular Impulse in Physics | Definition, Formula, Units – Rotational Motion

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

**Impulse Definition:**

If a force is applied on a body for an interval of time, then the product of that force and time is called impulse acted on that body.

i.e, impulse = (force)(time duration)

For a constant impulse, force acting on a body is inversely proportional to the time of action of force.

**Angular Impulse Defintion:**

Total effect of a torque applied on a rotating body in a given time is called angular impulse. Angular impulse is equal to total change in angular momentum of the system in given time. Thus, angular impulse

\(J=\int_{0}^{\Delta L} \tau d t=L_{f}-L_{i}\)

**Angular Impulse Dimensional formula:
**(torque x time) – ML²T

^{-1}

**Angular Impulse units:**

Nms

**Rotational Motion:
**In this portion, we will learn about the rotational motion of the objects. A body moves completely in rotational motion when each particle of the body moves in a circle about a single line. When a force is applied on a body about an axis it causes a rotational motion. The force applied here is called the torque. The axis of the rotation usually goes through the body. Also, learn the two theorems such as parallel axes and perpendicular theorem explained with respect to rotational motion of objects.