Questions
A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it at time t is proportional to [Uttarakhand PMT 2014)
a
t1/2
b
t
c
t3/2
d
t2
detailed solution
Correct option is B
For an instantaneous displacement dx, we can writeP=dWdt=F·dxdt=F·vP=(F)(at)=(ma)(at) (∵F=ma)=ma2t⇒P∝t ∵ma2= constantTalk to our academic expert!
Similar Questions
If force F is applied on a body and it moves with the velocity V, the power will be :
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