Question

Assertion : Centripetal force is always required for motion in curved path.

Reason : On a banked curved track, vertical component of normal reaction provides the necessary centripetal force.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option (c) A is true but R is false

Explanation :

While taking a turn on banked road, the necessary centripetal force is provided by the horizontal component of normal reaction and vertical component balances the weight of the vehicle. Also roads are usually banked for average speed of vehicles passing over them. However, if the speed of a vehicle is somewhat less or more than this, the self adjusting static friction will operate between the tyres and the road.