The blocks A and B are arranged as shown in the figure. The pulley is frictionless. The mass of A is 10 kg. The coefficient of friction of A with the horizontal surface is 0.20. The minimum mass of B to start the motion will be 

(1) 2 kg

(2) 0.2 kg

(3) 5 kg

(4) 10 kg

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#1-Forces & Types

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Types of forces
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