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Question

Assuming the coefficient of friction between the road and tyres of a car to be 0.5, the maximum speed with which the car can move round a curve of 40.0 m radius without slipping, if the road is unbanked, should be
 


  1. 14m/s

  2. 11m/s

  3. 25 m/s

  4. 19m/s


Solution

The correct option is A

14m/s


v=μgr=0.5×9.8×40=196=14 m/s

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