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April 25, 2015

Homework Help: Physics

Posted by Angel on Monday, December 5, 2011 at 3:45pm.

Suppose that a simple pendulum consists of a small 71.8 g bob at the end of a cord of negligible mass. If the angle between the cord and the vertical is given by
= (0.0465 rad) cos[(6.52 rad/s) t + ],
what are (a) the pendulum's length and (b) its maximum kinetic energy?


All right, I got that l=.23053m, but I'm not sure how to get b.

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