Question

When vehicle is moving along vertical circular track frictional force between tyres & road surface is

a) vertically upward b) vertically downward

c) Towards the centre of circular track d) Away from the centre of circular track​

Answer 1

Answer:

Option (a)

Explanation:

In vertical direction mg force acts downward so the tendency of vehicle is to move down so the friction acts vertically upwards so that it can balance the mg force

Answer 2

When a vehicle is moving along a vertical circular track, the frictional force between the tyres and the road surface is (c)towards the centre of the circular track.

Explanation:

• Any net force causing uniform circular motion is called a centripetal force. It acts in the opposite direction of the motion, radially inward to the turn.
• The friction between the tires and the road causes the centripetal force that causes the car to turn in a circular motion.
• The car must have a low coefficient of friction or it will drive in a larger-radius curve and leave the road.