Assume that a 1.00-kg ball is thrown solely by the action of the forearm, which rotates about the elbow joint under the action of the triceps muscle, Fig. 8-45. The ball is accelerated uniformly from rest to 10.0m/s in 0.350s, at which point it is released. Calculate
(a) The angular acceleration of the arm, and
(b) The force required of the triceps muscle. Assume that the forearm has a mass of 3.70 kg and rotates like a uniform rod about an axis at its end.
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May 9, 2010

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