The pendulum consists of a 20-kg uniform disk and a 3-kg uniform slender rod. It is released from rest in the position shown. Suppose that L = 1.5 m. (Figure 1) Figure Part A M-301-m 1 of 1 Determine its angular velocity, measured clockwise, when it rotates clockwise 90° Express your answer in radians per second to three significant figures. Enter positive value if the angular velocity is clockwise and negative value if the angular velocity is counterclockwise.

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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.