Question

explain with examples the disadvantages of friction​

Answer 1

Answer:

1)Friction produces heat which damages the moving parts of a machine.

2)Friction produces wear and tear on the contacting surfaces. This reduces the life of machine parts, tyres and shoe soles.

3)A lot of energy is wasted in overcoming the friction before an object starts moving.

Explanation:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.

Answer 2

Explanation:

1. friction causes loss of energy.For example while walking our feet rub on the surface because of which we have to apply extra force
2. friction produces heat.For example when any mechanical part rotates our faces friction for long it turns hot