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प्रश्न
State whether the following statement is True or False.
A boy does work while pushing a wall.
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उत्तर
This statement is false.
Explanation:
In physics, work is defined as force multiplied by displacement. Pushing a wall requires using force, yet the wall does not move (displacement is zero), hence the labor done is zero.
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संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
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Answer the following in short.
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(iii) What is the mechanical advantage of the system?
(iv) What assumption do you make in arriving at your answer in part (iii)?
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