Questions
Work done in time t on a body of mass m which is accelerated from rest to a speed y in time t1 as a function of time t is given by
a
12mVt1t2
b
mVt1t2
c
12mvt12t2
d
12mv2t12t2
detailed solution
Correct option is D
Work done on the body = gain in K.E.acceleration of the body, a=Vt1 velocity acquimd in time t is given by v1=at=Vt1×t K.E. =12mVt1×t2=12mV2t12×t2Talk to our academic expert!
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