A wheel rotating with 11 rev/s is uniformly accelerated at 0.3 rad/s2 for 8 seconds. It then rotates with a uniform speed  for next 11 s. Then it is made to stop in next 16 s. Determine (i)maximum angular velocity; (ii) total angular displacement                 Solution: The maximum velocty in rad/s  is The total displacement in rad is

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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.