(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle and released.

What is the speed of the ball at the lowest point if L = 2.20 m, = 19.0°, and m = 500 kg?

2. Relevant equations

W=mgd(cos theta)

KE=(1/2)mv^2

3. The attempt at a solution

How do I get the velocity? Can I get it by using the above equations if I solve for W? Where do I plug the answer for W in to find the velocity?

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# Homework Help: Mechanical Energy

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