PROBLEM 15.20 The belt sander shown is initially at rest. If the driving drum B has a constant angular acceleration of 120 rad/s counter- clockwise, determine the magnitude of the acceleration of the belt at Point C when (a) t = 0.5 s, (b) t = 2 s. 25 mm C 25 mm

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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.