The design of a camshaft-drive system of a four-cylinder automobile engine is shown. As the engine is revved up, the belt speed v changes uniformly from 3.4 m/s to 6.2 m/s over a 1.5-second interval. Calculate the magnitudes of the accelerations of points P₁ and P₂ halfway through this time interval. Camshaft sprocket Drive bolt tensioner Crankshaft sprocket 66 mm P₁ Intermediate sprocket

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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.