Force acting on a particle moving in a straight line varies with the velocity of the particle as F = K/v, where K is a constant. The work done by this force in time t is
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a
Kv2t
b
2 Kt
c
Kt
d
2Ktv2
answer is C.
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Detailed Solution
Fv= K mdvdtv=K m dv v=Kdt on intregation mv22=Kt 12mv2= change in kinetic energy = work done
Force acting on a particle moving in a straight line varies with the velocity of the particle as F = K/v, where K is a constant. The work done by this force in time t is