A body of mass m sliding down on a movable inclined plane of mass 2m,assuming friction is absent everywhere the kinetic energy of 2m as a function of time is
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mg sin θ − Fr = ma
At a constant speed, a = 0
Fr = mg sin θ
Energy dissipated = Work done by the frictional force
W = Fr ⋅ s
s = length of the inclined surface = h/sin θ
W = mg sin θ (h/sin θ) = mgh
At a constant speed, a = 0
Fr = mg sin θ
Energy dissipated = Work done by the frictional force
W = Fr ⋅ s
s = length of the inclined surface = h/sin θ
W = mg sin θ (h/sin θ) = mgh
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