Speedboat a negotiates a curve whose radius is 118 m., Ask an Expert

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Q1. Speedboat A negotiates a curve whose radius is 118 m. Speedboat B negotiates a curve whose radius is 270 m. Each boat experiences the equivalent centripetal acceleration. What is the ratio vA/vB of the speeds of boats?

Q2. A 40 N block rests on an adjustable inclined plane; the maximum angle just before it slips is 27o with the horizontal. What the coefficient of static friction is between block and plane surfaces?

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