Question

Why do typres have a better grep of the
road while going on a level road than on
an incline?​

Answer 1

Answer:

SOLUTION

Explanation:

The normal reaction force on a level road is mg, whereas on an inclined plane it is mg cos θ, which means that on an incline road the friction force between the tyre and the road is less. Hence, tyres have less grip on an incline plane and better grip on a level road.

Answer 2

On a level road the full weight of the car presses the road and the normal force is maximum and so is the force of friction. While on an incline only a component of weight (mg.cosθ) is available to press the road normally. So normal force is always less than the weight and the force of friction also less than the level road. So the grip of the tires is less.