Explain the types of frictions in short.

Differentiate sliding friction and rolling friction.

Explain, how can we walk so much easily on the ground.

Name three important disadvantages of friction.

Name two methods of increasing friction.

Write a short note on term ‘groove’.

State the reason for sprinkling of fine powders on the carrom board.

Ball bearings are used in machineries. Explain the reason.

State the dependency of frictional force on the viscosity of fluid.