PROBLEM The mechanism shown below is used in a distribution center to push boxes along a platform and to a loading area. The input link i driven by an electric motor, which, at the instant shown, has a velocity of 25 rad's and accelerates at a rate of 450 rad/s. Knowing that the input link has a length of 250 mm, determine the instantaneous acceleration (m/s) of the end of the input link in the position shown. FIGURE SOLUTION 250 mm Input link

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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.