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A particle of mass m is driven by a mach...

A particle of mass m is driven by a machine that delivers a constant power k watts. If the particless starts from rest, the force on the particle at time t is

A

`sqrt((mk)/(2)) t^(-1/2)`

B

`sqrt(mk) T^(-1/2)`

C

`sqrt(2mk ) t ^(-1/2)`

D

`1/2sqrt(mk) t^(-1/2)`

Text Solution

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The correct Answer is:
A
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