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Physics: Pulley Friction

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A M1_1 = 5 kg box rests on a table and is connected to a second box of mass M2_2 = 10 kg via a rope that hangs over a frictionless pulley as shown. The coefficient of friction, μ\mu is 0.2, Use free body diagrams to answer the following:

B. What is the tension in the rope?

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A M1_1 = 6 kg box rests on a table and is connected to a second box of mass M2_2 = 5 kg via a rope that hangs over a frictionless pulley as shown. The coefficient of friction, μ\mu is 0.15, Use free body diagrams to answer the following:

B. What is the tension in the rope?

A M1_1 = 8 kg box rests on a table and is connected to a second box of mass M2_2 = 4 kg via a rope that hangs over a pulley as shown. The coefficient of static friction, μs\mu_s is 0.2, and the coefficient of kinetic friction μk\mu_k is 0.1. Use a free body diagrams to answer the following.

B. If the box does cause the system to move, what is the acceleration of the system, and the tension in the rope?