Question: The force needed to keep a car from skidding on a curve varies inversely as the radius r of the curve and jointly as the

The force needed to keep a car from skidding on a curve varies inversely as the radius r of the curve and jointly as the weight of the car and the square of the speed. It takes 3000 lb of force to keep a 2000-lb car from skidding on a curve of radius 500 ft at 30 mph. What force will keep the same car from skidding on a curve of radius 800 ft at 60 mph? The force needed to keep a car from skidding on

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