If the mass of A = 10 kg , coefficient of static friction = 0.22 , coefficient of kinetic friction = 0.2 , then the minimum mass of B to start motion is

Question

If the mass of A = 10 kg , coefficient of static friction = 0.22 , coefficient of kinetic friction = 0.2 , then the minimum mass of B to start motion is, 2 kg, 2.2 kg, 4.8 kg, 3.4 kg

MARKS App · Accepted Answer

Let the minimum mass of B is M B . Force applied by it F = M B g Friction force on block A f = μ M A g For motion to start M B g = μ M A g M B = 0.22 × 10 = 2.2 kg

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