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A force F 5i+6j-4k acting on body produces displacement S= 6i+5k .workdone by force is

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As we know that the work done by a body is dot product of force and displacement.

Thus, W = F.S

F = 5i+6j-4k

S = 6i+5k

W = (5i+6j-4k).(6i+0j+5k)

By dot product we have,


W= 10 j

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