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The lecture Efficiency by Jared Rovny is from the course Work.
Given 50 J of input work, a machine produces an output work of 25 J. What is the efficiency of the machine?
A box with mass m = 10 kg is pushed up a slope to a height of h = 10 m. The slope makes a θ = 30° angle with the horizontal and the friction force along the slope is F_f = 5 N. What is the input work done on the box? (Useful relations: sin(30°) = 0.5 , g = 9.8 m/s² )
A box with mass m = 10 kg is pushed up a slope to a height of h = 10 m. The slope makes a θ = 30° angle with the horizontal and the friction force along the slope is F_f = 5 N. What is the efficiency? (Useful relations: sin(30°) = 0.5 , g = 9.8 m/s² )
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