52. With counterclockwise positive, the angular acceleration αfor both masses satisfies ()221212,mgLmgLImLmLτα=−==+by combining Eq. 10-45 with Eq. 10-39 and Eq. 10-33. Therefore, using SI units, 22229.8 m/s0.20 m0.80 m8.65 rad/s(0.20 m)(0.80 m)gL LLL−−===−++where the negative sign indicates the system starts turning in the clockwise sense. The magnitude of the acceleration vector involves no radial component (yet) since it is
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