Check if in this case, work is done and why?
A man pushing a wall.

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Solution

Analyzing problem:
When a man is pushing a wall:
He is applying force
Wall is not displaced
The formula of work done:
W=F $\times$ d
where F = force applied to the object
and d =displacement of the object
Conclusion:
In the case of a man pushing a wall, we have force but displacement is zero, so work done will be zero.
Answer:
In this case, work is not done since the displacement of the wall is zero.

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