A car drives around a curve with radius 405 m at a speed of, Ask an Expert

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A car drives around a curve with radius 405 m at a speed of 39 m/s. The road is banked at 4.7^o. The mass of the car is 1600 kg.

(a) What is the frictional force on the car?

(b) At what speed could you drive around this curve so that the force of friction is zero?

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