A force (3hati+4hatj) newton acts on a boby and displaces it by (3hati+4hatj) metre. The work done by the force is
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workdone by the force is 25 J
A force (3i + 4j) N acts on a body and displaces it by (3i + 4j) m.
we have to find workdone by the force.
we know, workdone is the dot product of force applied on body and displacement of body.
i.e., W = F.s
here, F = (3i + 4j) N , s = (3i + 4j) m
W = (3i + 4j).(3i + 4j)
= 3 × 3 + 4 × 4
= 9 + 16
= 25 J
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