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7) A block of mass m1 = 38 kg on a horizontal surface is connected to...

7) A block of mass m1 = 38 kg on a horizontal surface is connected to a mass m2 = 21.6 kg that hangs vertically as shown in the figure below. The two blocks are connected by a string of negligible mass passing over a frictionless pulley. The coefficient of kinetic friction between m1 and the horizontal surface is 0.24.

(a) What is the magnitude of the acceleration (in m/s2) of the hanging mass?

Answer:    m/s2

(b) Determine the magnitude of the tension (in N) in the cord above the hanging mass.

Answer: N

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