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## QuestionPhysicsClass 11

A car of maas M is moving on a horizontal circular path of radius r. At an instant its speed is v and is increasing at a rate a.
(A) The acceleration of the car is towards the centre of the path
(B) The magnitude the frictional force on the car is greater than $$\frac{{{m}{v}^{{2}}}}{{r}}$$.
(C) The friction coefficient between the ground and the car is not less than $$\frac{{a}}{{g}}$$.
(D) The friction coefficient between the ground and the car is $$\mu=\frac{{{\tan}^{{-{{1}}}}{v}^{{2}}}}{{r}}{g}$$