what is the work done by a person in the following case s (a) the person is applying a force of 5 N to an object of 10kg and the object displace to a length 2m (b) the person is trying to move a brick wall of 100kg with a force of 100N but the wall is not moved at all
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Given :
★ First case :
★ Second case :
To Find :
Work done in both cases.
Solution :
⧪ Work done is defined as the product of force and displacement.
Formula :
⧪ First case :
➠ W = F d
➠ W = 5 × 2
➠ W = 10 J
⧪ Second case :
➠ W = F d
➠ W = 100 × 0
➠ W = 0 J