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A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagrams shown in Figure correctly shows the displacement-time curve for its motion?

Answers (1)

The answer is the option (b)

P = F.\frac{ds}{dt} = F. v= constant

Carrying out dimensional analysis we get,

[F][v] = constant

[MLT^{-2}] [LT^{-1}]= constant

L^{2}T^{-3}= constant

L\propto T^{\frac{3}{2}}

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