A 2 m high person is holding a 25 kg trunk on his head and is standing at a roadways bus-terminus. How much work is done by the person?
Q. A 2 m high person is holding a 25 kg trunk on his head and is standing at a roadways bus-terminus. How much work is done by the person?
Ans. No work is done as force is applied to keep on the head but there is no displacement of a body, as: Work done = force x displacement.
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