College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 72

If the coefficient of kinetic friction between the block and the table in Fig. is 0.560, and m 1 = 0.150 kg and m 2 = 0.250 kg, (a) what should m 3 be if the system is to move with a constant speed (b) If m 3 = 0.100 kg, what is the magnitude of the acceleration of the system

FIGURE Which way will they accelerate See Exercises.