A car of mass M is travelling on a horizontal circular path of radius r. At an instant its speed is v and tangential acceleration is a:
A
The acceleration of the car is towards the center of the path
B
The magnitude of the frictional force on the car is greater than 
C
The friction coefficient between the ground and the car is not less than a/g.
D
The friction coefficient between the ground and the car is 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b, c) : a t = 
= a
friction force on car = 
which is greater than 
µ min = 
therefore it is not less than 
for safe turn.
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