The angular acceleration of a body which is rotating about a fixed axis is given by a = - kw², where the constant k = 0.26 (no units). Determine the angular displacement and time elapsed when the angular velocity has been reduced to 1/8 times its initial value wo = 11.8 rad/s. The initial rotation angle is 0o = 0. Answers: 0 = t = i rad S

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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.