Kinematics Question 793

Question: A car of mass 800 kg moves on a circular track of radius 40 m. If the coefficient of friction it’s 0.5, then maximum velocity with which the car can move it’s [MH CET 2004]

Options:

A) 7 m/s

B) 14 m/s

C) 8 m/s

D) 12 m/s

Show Answer

Answer:

Correct Answer: B

Solution:

$ {v _{\max .}}=\sqrt{\mu rg} $

$ =\sqrt{0.5\times 40\times 9.8}=14m/s $



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