30. A coin (assume a uniform disk) of mass 0.0025 kg and radius 0.02 m is given an angular velocity of 5 rad/sec and placed on a level surface with μk = 0.2. How much time will it take before the coin rolls without slipping? What is the angular velocity at this instant? 2022 wo

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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.