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Has work been done in the following example? A boy pushing against a locked door.

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Question

Has work been done in the following example?

A boy pushing against a locked door.

Very Short Answer
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Solution

No. Even though a large force is applied by the boy, the locked door does not move. Since the displacement is zero (s = 0), the work done is zero.

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Chapter 2: Work, Power and Energy - Intex Question [Page 25]

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Lakhmir Singh Physics [English] Class 10 ICSE
Chapter 2 Work, Power and Energy
Intex Question | Q 2. | Page 25
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