The distance y = 2.5 m. Find the upward velocity of A if the downward velocity of B is 3.3 m/s. Neglect the diameters of the pulleys. Use the expression that you derived for the length L of the rope (using variables for sA and y) to derive a relationship between the velocities of A and B. If the downward velocity of B is 3.3 m/s when y = 2.5 m, what is the upward velocity of A (enter a positive number)? Answer: vA = ____ m/s

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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.