A circular racket of radius 300 m is backed at an angle of 150. The coefficient of friction between the wheels of a race car and the road is 0.2. The optimum speed of the car to avoid wear and tear on its tyres is then ( Take tan 150=0.27,g=10ms−2)
A
10√3ms−1
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B
9√10ms−1
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C
√10ms−1
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D
2√10ms−1
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Solution
The correct option is B9√10ms−1 We know that
optimum velocity for vehicle on banked road is given by