4. Consider a wedge of mass m2 = 2M on a frictionless sur- face. Assume the incline angle 0 > 30°. A block of mass m3 = 2M lies on the incline plane. It is attached to a string that runs over a light frictionless pulley. The other end of the string is attached to a hanging block of mass mị = M. There is no space between the hanging mass and the wedge. Find the acceleration of all three masses. Explain why 0 > 30° makes this problem doable whereas smaller angles would be much more difficult to handle. m3 m2

4. Consider a wedge of mass m2 = 2M on a frictionless sur- face. Assume the incline angle 0 > 30°. A block of mass m3 = 2M lies on the incline plane. It is attached to a string that runs over a light frictionless pulley. The other end of the string is attached to a hanging block of mass mị = M. There is no space between the hanging mass and the wedge. Find the acceleration of all three masses. Explain why 0 > 30° makes this problem doable whereas smaller angles would be much more difficult to handle. m3 m2