Grade 12Mechanics
A car begins from rest at t=0,& then accelerates along a straight track during the interval 0
1 Answer
anandpal shekhawat
hi
as V=2t^2
so, A=dV/dt= 4t
as coin started moving at t=1s implies at this instant force acting on it has overcome the static friction
& F=mA =4N at t=1s
hence coeff. of friction = 4/g =0.4
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