Question

write any 4 disadvantages of friction ​

Answer 1

Answer:

Sol:-

Explanation:

1.Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat

2. Opposes motion, hence more energy is needed to overcome friction

3. Noise production in machines is irritating as well as leads to energy loss

4. Forest fires are caused due to friction between branches of trees

Answer 2

Answer:

Disadvantages of friction:

1. Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat

2. Opposes motion, hence more energy is needed to overcome friction

3. Noise production in machines is irritating as well as leads to energy loss

4. Forest fires are caused due to friction between branches of trees

5. Lot of effort and money goes in using techniques like greasing and oiling to overcome friction and usual wear and tear caused by it