what is friction how many types what are the factors effect on friction
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The factors affecting friction:
Roughness/smoothness of the sliding object.
Roughness/smoothness of the surface.
Shape/design of the object.
Normal force acting upon the sliding bodies.
Dry friction is independent of the surface area of a contact.
Type of friction involved
(rolling/sliding)
Sliding surface's state of matter (solid/fluid)
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