posted by Alphonse .
In the configuration shown (10m incline for m1 and 8m vertical length for m2 with a spring under it, both masses are linked by a rope and a pulley at the top), the 52.0 N/m spring is unstretched, and the system is released from rest. The mass of the block on the incline is m1 = 24kg and the mass of the other block is m2 = 5kg. (Neglect the mass of the pulley.). If the coefficient of kinetic friction between m1 and the incline is 0.24, then how fast (in m/s) are the blocks moving when m1 has slid 0.90 m parallel to the incline (and the 5.00 kg block has gained 0.90 m in elevation)?