The concept of variable banking for racetrack turns is shown in the figure. If the two radii of curvature are PA = 250 ft and Pg = 271 ft for cars A and B, respectively, determine the maximum speed for each car. The coefficient of static friction is µ, = 0.92 for both cars. B 24 19 Answers: VA = i ft/sec VB = ft/sec

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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.