What is the minimum coefficient of static friction

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Q. A string requires a 186 N force in order to break. A 1.50 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.90 m. What is the maximum speed that this mass can be whirled without breaking the string?

Q. A curve on a level road has a radius of 120 meters and is banked at the correct angle for a speed of 20 meters per second. If a car rounds this curve at 30 meters per second, what is the minimum coefficient of static friction between the tyres and the rod needed to prevent skidding?

Reference no: EM1351697

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What is the minimum coefficient of static friction : A string requires a 186 N force in order to break. A 1.50 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.90 m. What is the highest speed that this mass can be whirled without breaking the string.

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