Question

Friction is a necessary tng give any three example where friction isnecessary

Answer 1

Clutches in automobiles. Going around corners in cars. Accelerating in cars. Stopping cars. Transferring power using 'V' belts. Walking across the floor. Sitting in a chair. Slowing down a ship without having to reverse the propulsion system. Almost any situation where it is desired to accelerate, or stay in one place.