Question

Give two examples of each of harmful f r i c t i o n and use f r i c t i o n

Answer 1

Answer:

Harmful examples of Friction:

1. Friction causes moving objects to stop or slow down.

2. Friction produces heat causing wastage of energy in machines.

3. Friction causes wear and tear of moving parts of macinery, soles of shoes, etc.

Useful examples of Friction:

1. Friction between our shoes and the floor stop us from slipping.

2. Friction between tyres and the road stop cars from skidding.

3. Friction between the brakes and wheel help bikes and cars to slow down.

Hope this Answer help you.