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Question
A 2m high person is holding a 25kg truck on his head and is standing at the road ways bus terminus. How much work is done by the person.
A 2m high person is holding a 25kg truck on his head and is standing at the road ways bus terminus. How much work is done by the person.
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Solution
Work is said to be done when a force produces a displacement in the body and acts in any direction except perpendicular to the direction of displacement.
Work = Force×Displacement
The work done by the person is zero because the displacement is zero and the force is acting in the downward direction.
Work is said to be done when a force produces a displacement in the body and acts in any direction except perpendicular to the direction of displacement.
Work = Force×Displacement
The work done by the person is zero because the displacement is zero and the force is acting in the downward direction.
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