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2015-11-18T17:30:19+05:30

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Frictional force or friction is a force that is created when two surfaces move across each other. It slows down moving objects and reduces their Inertia
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2015-11-18T17:30:58+05:30
Friction is the resistive force that an object suffers while moving over a surface.
It acts opposite to the direction of motion or opposes motion.
 it is the reason for :
1.writing with chalk on a blackboard
2.walking
3.production of heat in heavy machinery
4. hand becoming hot while rubbing against thermocol
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