what is the friction force
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The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are at least two types of friction force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object.
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the force exerted by the surface on an object which makes the object move across it in the opposite direction is called friction force..!!!
due to friction force only we are able to walk on the ground..!!..!!
hope it helps you ☺
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