Question

What are the disadvantages of friction ?​

Answer 1

Explanation:

The main disadvantage of friction is that it produces heat in various parts of machines. In this way some useful energy is wasted as heat energy.

...

The disadvantages of friction are:

#More energy will be required to move the body.

#Parts of machine might lose their shape.

#Machine might stop working properly.

Answer 2

$\huge {\bf{\blue{Answer:-}}}$

Advantages of friction:-

It is because of friction that we can walk, drive, open doors, turn tap and write.Screw and nails do not slip of because of the friction between the wood and the metal surface of the screw .

Disadvantages of friction:-

Friction causes the moving parts in machinery and automobiles to heat up this results in wastage of energy and fuel. Fiction also causes wear and Tear of the moving parts .