Bar AB has the angular motions shown. Suppose that WAB = 4.2 rad/s and a AB = 7 rad/s² . (Figure 1) Figure 1 of 1 B 0.5 m OAB 1 m 60 C

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.