7/50 The wheel of radius r is free to rotate about the bent axle Co which turns about the vertical axis at the constant rate p rad/s. If the wheel rolls without slip- ping on the horizontal circle of radius R, determine the expressions for the angular velocity w and angu- lar acceleration a of the wheel. The x-axis is always horizontal. B M R

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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.