Question

why does friction damage the machines???​

Answer 1

Answer:

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

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Answer 2

Answer:

Friction produces heat which damages the moving parts of a machine. Friction produces wear and tear on the contacting surfaces. This reduces the life of machine parts, tyres and shoe soles. A lot of energy is wasted in overcoming the friction before an object starts moving.

More

Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts. A substance that is introduced between two surfaces in contact, to reduce friction, is called a lubricant.

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