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प्रश्न
Give reasons for the following. No work is done if a man is pushing against a wall.
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उत्तर
As the wall does not move from its place, the distance moved is zero. Hence, no work is done.
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संबंधित प्रश्न
Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
In which of the following cases, is work being done?
(i) A man pushing a wall.
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(iii) A boy climbing up a staircase.
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Its moment of a force scalar or a vector quantity?
Work done by this force at any instant is ______.
