The two crates A and B of mass mA = 100 kg and mB = 70 kg, respectively, are connected by...

The two crates A and B of mass mA = 100 kg and mB = 70 kg, respectively, are connected by a system of pulleys. The system is initially at rest, when the man C starts pushing on A with a constant force P. Neglect the mass of the cables and the pulleys and neglect friction in the pulley bearings. Assume that cable segments are long enough so that crate A does not hit any of the pulleys.

If μk = 0.2 and P = 375 N, determine the speed of each crate after A slides 6 m.

Figure P4.92