Laws Of Motion Question 109

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[AMU 1995]

Options:

A) 25 m/s

B) 19 m/s

C) 14 m/s

D) 11 m/s

Show Answer

Answer:

Correct Answer: C

Solution:

$ v=\sqrt{\mu gr}=\sqrt{0.5\times 9.8\times 40}=\sqrt{196}=14\ m/s $



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