Kinematics Question 781

Question: The coefficient of friction between the tyres and the road is 0.25.The maximum speed with which a car can be driven round a curve of radius 40 m without skidding it’s (assume $ g=10ms^{2} $ ) [Kerala (Med.) 2002]

Options:

A) $ 40ms^{1} $

B)$ 20ms^{1} $

C) $ 15ms^{1} $

D)$ 10ms^{1} $

Show Answer

Answer:

Correct Answer: D

Solution:

$ v=\sqrt{\mu rg}=\sqrt{0.25\times 40\times 10}=10m/s $



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