A circular racetrack of radius 300 m is banked at an angle of 15°. If the coefficient of friction between the wheels of a race-car and the road is 0.2, what is the (a) optimum speed of the race-car to avoid wear and tear on its tyres, and (b) maximum permissible speed to avoid slipping?

1.  vo = 28.1 m/s and vmax = 38.1 m/s

2.  vo = 38.1 m/s and vmax = 28.1 m/s

3.  vo = 0 m/s and vmax = 28.1 m/s

4.  vo = 38.1 m/s and vmax = 100 m/s

Subtopic:  Banking of Roads |
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