Question: In Figure two blocks are connected over a pulley. The mass of block A is 10 kg, and the coefficient of kinetic friction between A

In Figure two blocks are connected over a pulley. The mass of block A is 10 kg, and the coefficient of kinetic friction between A and the incline is 0.20. Angle θ of the incline is 30^o. Block 4 slides down the incline at constant speed. What is the mass of block B?

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