A 10-kg homogeneous sphere S is fastened to the end of the 20-kg homogeneous rod OA as shown. The 0.04-kg bullet B is fired with a horizontal velocity of 600 m/s. The bullet passes through the centre of the sphere and emerges with a hor- izontal velocity of 100 m/s to the right. If the rod and sphere were stationary be- fore impact, determine their angular velocity after the bullet passes completely through the sphere. Solve all questions using Impulse and Momentum methods

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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.