NCERT CLASS IX - Science Textbook
Chapter 11 - Work and Energy

A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (Fig. 11.3). Let us take it that the force acts on the object through the displacement. What is the work done in this case?

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2015-05-17T08:04:01+05:30

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F = 7 Newtons
Displacement s = 8 m

As the force and displacement are in the same direction, the work done is the product of magnitudes of force and the displacement.

 work done =  7 N * 8 m = 56  Newtons

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