At the instant shown in figure (5) ωA = 6 rad/s, pulley A is given an angular acceleration α = (0.9 θ) rad/s 2 , where θ is in radians. Determine the magnitude of acceleration of point B on pulley C when A rotates 4 revolutions. Pulley C has an inner hub which is fixed to its outer one and turns with it.

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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.