The figure on the right shows a system of two masses connected by a string. As m falls a distance h, M. accelerates up the plane. The coefficient of friction between M and the inclined plane is u

The figure below shows a system of two masses connected by a string. As m falls a distance h, M accelerates up the plane. The coefficient of friction between M and the inclined plane is µ.

(a) What is the change in potential energy on the system after m has fallen a distance h?

(b) What is the work done by friction on the system?

Two masses are connected by a string that goes over an ideal pulley as shown in Figure 6-12. Block A has a mass of 3.00 kg and can slide along a rough plane inclined 30.0° to the horizontal. The coefficient of kinetic friction between block A and the plane is 0.400. Block B has a mass of 2.77 kg. What is the acceleration of the blocks?

Two masses of 4.50 kg each, connected by a string, slide down a ramp making an angle of 40 degrees with the horizontal. The coefficient of kinetic friction between M1 and the ramp is 0.34. The coefficient of kinetic friction between M2 and the ramp is 0.18. Find the magnitude of the acceleration of the masses.