A body of mass 6 kg is under a force which causes a displacement in it is : s=t^4/4. Find the work done by force in displacing the body in first 2 seconds
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Answer:
24.
Explanation:
s=t^4/4 m=6kg t=2s. W=?
s=2×2×2×2/4
=16/4=4
s=4 v= ds
dt
=d(t^4/4)/dt
=4t/4=t
a=dv
dt
=t/dt=1
W= F.S
=(ma) S
= 6×1×4
= 24
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