what is frictional force
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Frictional force is the force exerted by the surface on which the object is in contact with. It acts in the opposite direction of the moving object.
It is the reason why no machine or object can have 100 percent efficiency.
It is the reason why no machine or object can have 100 percent efficiency.
kulbeer:
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Friction is the force experienced by an object when it moves or tries to move on a surface. It is resisting force
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