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Q.

A body is acted upon by a force proportional to square of distance covered. If the distance covered is denoted by x, then work done by the force will be proportional to :

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a

x

b

x2

c

x-1

d

x3

answer is D.

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Detailed Solution

work done for variable force =∫F.dx  here F=kx2w=∫kx2dx=kx33
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A body is acted upon by a force proportional to square of distance covered. If the distance covered is denoted by x, then work done by the force will be proportional to :