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NEET2012PhysicsLaws of MotionActual

A car of mass m is moving on a level circular track of radius R . If _s represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by

Options

  1. A_s m R g
  2. BR g / _s
  3. Cm R g / _s
  4. D_s R g

Correct answer

D. _s R g

Step-by-step solution

In this condition, centripetal force is equal to static frictional force between road and tyres, so aligned _s m g & = m v^2 R v_ & = _s R g aligned

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