Increase the friction between the wheel and the axle
Reduce the friction between the wheel and the axle
Reduce the friction between ground and the whee
None of the above
Answer is Right!
Answer is Wrong!
The correct answer is: B. Reduce the friction between the wheel and the axle
Ball bearings are used in cycles, scooters, etc. to reduce the friction between the wheel and the axle. This allows the wheel to rotate more easily, which makes it easier to ride the cycle or scooter.
Option A is incorrect because ball bearings reduce friction, not increase it.
Option C is incorrect because ball bearings reduce friction between the wheel and the axle, not between the ground and the wheel.
Option D is incorrect because ball bearings are used to reduce friction, not increase it.