Q.

A body is acted upon by a force which is proportional to the distance covered. If 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

x32

d

none of these

answer is B.

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Detailed Solution

Given F ∝x ⇒ F = kx, W = ∫  kxdx = kx22
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