The solid cylinder in the figure is 4 ft in diameter and weighs 644lbs. it is acted upon by an upward force of 100lb applied by a cord wrapped around it. Find the coefficient of static friction required to prevent slipping.

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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.