Question

Give example to show that friction is both a friend and foe??​

Answer 1

Explanation:

It can be both friend and foe.

FRIEND:

1 It helps in construction of buildings.

2 It helps in walking on the ground.

FOE:

1 soles of shoe and tyres of vehicles wear out due to friction.

2 friction can also produce heat. so it can damage the machines.

Answer 2

friction is necessary evil acting both as friend and a foe.

friction as friend = we are able to walk because of frictional forces between ground and our feet.

friction as foe = wear and tear of soles of our shoes is due to friction