Question

How to reduce friction?

Answer 1

Friction

1. Friction is a force that resists motion.
2. The amount of friction depends on the character of the contacting surface between the two bodies (rough or plan).
3. Friction also depends on the type of body's movements(sliding or rolling).
4. The frictional force is directed opposite to the motion of the body.

Various ways to reduce friction

1. The use of oil on the contacting surface will reduce friction.
2. Using of ball bearings as the rolling friction is lesser than sliding friction.
3. Reducing the roughness of the surface by polishing.
4. Streamlining vehicles to reduce friction caused by air.