Calculate the maximum speed at which a car can be driven safely along a curved road of radius 40 m banked at 20° with the horizontal. g = 9.8 m/s?
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- A 2.0kg ball swings in a vertical circle on the end of an 80cm long string. The tension in the string is 20N when its angle from the highest point on the circle, 0, is 30deg. a) What is the ball's speed when 0-30deg? b) What are the magnitude and direction of the ball's acceleration when 0=30deg?A car negotiates an unbanked 81.7 m radius curve at 17.4 m/s. What would the minimum coefficient of friction be needed to negotiate the curve?A highway curve of a radius of 400 m is designed for traffic moving at a speed of 91.0 km/hr. What is the correct banking angle of the road?
- A 1200 kg car rounds a level freeway exit turn of radius 40m at constant speed of 20m/s. What is the net force on the car as a vector? Choose your own coordinate system that seems appropriate.A 1250 kg car traveling at a speed of 25.0 m/s rounds a 175 m radius curve. Assuming that the curve is banked and the road is frictionless, determine the bank angle with respect to the horizontal.