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Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 4 - Work And Energy

Question 37 Exercise

A body of mass 100kg is lifted up by 10m. Find:

a) the amount of work done

b) potential energy of the body at that height

Answer:

Height, h = 10m Acceleration due to gravity, g = 10 m/s^2 a) Work done, W = mgh = 10kJ b) Potential energy of the body = work done = 10kJ

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