I've been struggling over this homeword question for hours now, and have made little, or no progress figuring out the exact steps for it. The system is set up with block M, on a table, attached on the left side of the block is a string, which is holding, across a pulley, little mass m, which dangles over the edge of the table. The exact difference in angles would be 90'. In the system shown, block M (15 kg), is initially moving to the left, with a speed v(i) = 2.8 m/s. The mass of m, which dangles in the air is 8 kg. There is no mass in the string, and no friction in the pulley. The coefficent of friction betweek M and the surface are kinetic friction = .3, and static friction = .4. Find the velocity of M when m has fallen 2.5 m Any help would be appreciated.