of mass m1and m2are connected by a massless string that passes over the pulley in FIGURE P12.65. The pulley turns on frictionless bearings. Mass m1slides on a horizontal, frictionless surface. Mass m2is released while the blocks are at rest.
a. Assume the pulley is massless. Find the acceleration of m1and the tension in the string. This is a Chapter 7 review problem.
b. Suppose the pulley has mass mpand radius R. Find the acceleration of m1and the tensions in the upper and lower portions of the string. Verify that your answers agree with part a if you set mp= 0.
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