Question

Block B, with mass 5.00 kg, rests on block A, with mass 8.00kg. There is no friction between the table and block A, but the coefficient of static friction between block A and B is 0.750. A massless string attached to block A passes over a frictionless pulley and block C is suspended from the other end of the string. If we want ALL the blocks moving together with the same acceleration, the largest possible mass that block C can have is 39.0 kg. Lets change the mass for block C and place a new block C with mass 50.0 kg instead. Evaluate if the new acceleration is supported by the friction force acting on block B. Determine: The total acceleration of the three blocks if they were to move all together. ( This may not happen, just pretend... 5.55 m/s2 9.42 m/s2 7.78 m/s2 0.79 m/s2
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