science module unit 4.10,4.11,4.12. the force of friction or simply friction is that force which...
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APPLICATIONS OF
FRICTION
Science Module Unit 4.10,4.11,4.12
PREPARED BY
SAJJAD ALI
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FRICTION
The force of friction or simply friction is that force which opposes the motion of an object over another object in contact with it
Friction plays a vital role in our daily life. Without friction we are handicap:
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Advantages application of Friction
Due to friction we are able to walk on the surface of the Earth
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The brakes applied in automobiles work only due to friction
friction helps to transmit power from the motors and engine to other machines by making use of belts and clutches.
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•Nails, screws and the wooden boards are held together due to force of friction
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The fibers of thread or rope are held together due to force of friction
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•Friction can also be used for making fire
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In overcoming the friction, a lot of energy is wasted in the form of heat. Friction causes wear and tear of the moving parts
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Due to friction, speed of automobiles cannot be increased beyond a certain limit., also engines of automobiles consume more fuel which is a money loss
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Effects of friction. resistance to motion
heat generation
Wear
wear is sideways displacement of material from original position on a solid surface performed by the action of another surface
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How lubricants can be used to reduce friction?
Lubricant
In general, a lubricant is something that lessens or prevents friction. A lubricant is some substance such as oil, capable of reducing friction, heat, and wear when introduced to provide a protective film that separates the two rubbing surfaces and reduces the level of friction in the two rubbing surfaces.