Explain advantages and disadvantages of friction.

1.	Explain advantages and disadvantages of friction.
Answer» Advantages of friction : 1) Safe walking on the floor, motion of vehicles etc., are possible only due to friction. 2) Nails, screws are driven into walls (or) wooden surfaces due to friction. 3) Friction helps the fingures hold the things (or) objects like pen, pencil and water tumbler etc. 4) Speed running vehicles etc. can be stopped suddenly when friction is present, otherwise accidents become large. Due to friction vehicles move on the roads without slipping and they can be stopped. 5) The mechanical power transmission of belt drive is possible due to friction. Disadvantages of friction : 1) Due to friction there is large amount of power loss in machines and engines. 2) Due to friction wear and tear of the machines increases and reducing their life. 3) Due to friction some energy gets converted into heat which goes as waste.

Answer»

Advantages of friction :

1) Safe walking on the floor, motion of vehicles etc., are possible only due to friction.

2) Nails, screws are driven into walls (or) wooden surfaces due to friction.

3) Friction helps the fingures hold the things (or) objects like pen, pencil and water tumbler etc.

4) Speed running vehicles etc. can be stopped suddenly when friction is present, otherwise accidents become large. Due to friction vehicles move on the roads without slipping and they can be stopped.

5) The mechanical power transmission of belt drive is possible due to friction.

Disadvantages of friction :

1) Due to friction there is large amount of power loss in machines and engines.

2) Due to friction wear and tear of the machines increases and reducing their life.

3) Due to friction some energy gets converted into heat which goes as waste.

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