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(a) At what speed will the force of static friction exerted on the car by the road be equal to half the weight of the car? The mass of the car is m = 1200 kg, the radius of the corner is r = 45 m, and the coefficient of static friction between the tires and the road is μs = 0.82.
(b) Suppose that the mass of the car is now doubled, and that it moves with a speed that again makes the force of static friction equal to half the car s weight. Is this new speed greater than, less than, or equal to the speed in part (a)? |
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