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Rod rotation. The figure below shows a 3.4 kg uniform rod that is $L_1+L_2=L=2.8$ m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that passes through a point $L_1=1.1$ m from one end of the rod. The rod is released from rest when it is horizontal. (a) What is its angular acceleration just then? (b) If the rod's mass were increased, would the answer increase, decrease, or stay the same?
(a) Number 4
Units $rad/s^2$
(b) stay the same
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