Work Energy Power 10th ICSE Physics Exercise 2(A) | Q 6 – 10

7) When a body moves in a circular path, How much work in done by the body? Give Reason.

8) A Satellite revolves around the earth in a circular orbit. What is the work done by the satellite ? Give reason.

9) State whether work is done or not by writing yes or no, in the following cases ?

(a) A man pushes a wall.

(b) A coolie stands with a box on his head for 15 min.

(c) A boy climbs up 20 stairs.

10) A Coolie X carrying a load on his head climbs up a slope and another coolie Y carrying the identical load on his head moves the same distance on a frictionless horizontal platform. Who does more work ? Explain the reason.

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