A massive platform of mass M is moving with speed v=6 ms -1 . At t=0 a body of mass m (m << M) is gently placed on the platform. If coefficient of friction between body and platform is μ μ = 0.3 and g = 10 m/s 2 . Then
Text Solution
Verified by ExpertsThe correct answer is:
D
Since M>>m, the velocity of M remains unchanged after m is placed on to it.
Acceleration of m, a = 
= μ μ g
a mM = a - 0 = a and initial relative velocity vmM = 0 - v = -v
Hence s = 
= 6 m Hence the correct choice is
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