Question

A 1000-kg car travels across the crest of a circular hump of radius 30.0 m. What is the maximum

speed at which the car can go over the hump without losing contact with the road? The coefficients of

friction between the road and the car’s tires are μ s = 0.3 and μ k = 0.2. Use g = 10 m/s 2

Answer 1

Normal reaction at the car when it at crest of the circular hump is

At the maximum speed Normal reaction to the car becomes zero because as speed increses centripatal force increases