Laws Of Motion Question 368

Question: If mass of A=10kg , coefficient of static friction = 0.2, coefficient of kinetic friction = 0.2. Then mass of B to start motion is[Orissa PMT 2004]

Options:

A)2 kg

B)2.2 kg

C)4.8 kg

D)200 gm

Show Answer

Answer:

Correct Answer: A

Solution:

μs=mBmA   0.2=mB10  mB=2 kg



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