Question

Mention any 5 disadvantages of friction.

Answer 1

Friction is a necessary evil which causes the following disadvantages:

• Friction produces heat. This increases the wear and tear of machines and it may damage them.
• Friction reduces efficiency of machines.
• Sometimes, friction or collision between two rigid objects sparks at any place which may cause fire.
• Soles of shoes wear out due to friction. Similarly, tyres of cycles and vehicles wear out due to friction.
• Knives and razors lose their sharp edges due to friction.

This is because a part of energy supplied to the machines is converted into heat.

Answer 2

There are numerous disadvantages of friction. Here are five disadvantages of friction.

1.) You will need more energy to make a bike go faster.
2.) The soles on the bottom of shoes will wear out faster.
3.) Friction can make a car overheat.
4.) Tires on any vehicle will wear out because of friction.
5.) Friction will also slow down an object or stop it completely.