Two Masses Are Connected by a String Which Passes Over

Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a 30.0 degree incline. The inclined surface has a coefficient of kinetic friction of 0.200. The vertically hanging mass is 6.00 kg and the mass on the incline is 4.00 kg. The magnitude of the acceleration of the 4.00 kg mass is (the initial velocity of the 4.00 kg mass is down the incline)

A) 7.16 m/s².
B) 5.84 m/s².
C) 2.98 m/s².
D) 1.53 m/s².
E) 0.00 m/s².

Correct Answer:

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