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what is static friction?can the object move in static friction?and if it can, then what is the difference between static and sliding friction?

Dear student

Static friction is the force opposing a push or pull on a body which tends to prevent it from moving and keeps it stationary. It is a type of frictional force which is exerted on bodies at rest. Example of this are: Papers on a tabletop, a towel hanging on a rack.

Object cannot move in static friction. If a book is pushed horizontally with a small force, static friction establishes an equal and opposite force that keeps the book at rest.

Sliding friction refers to the resistance created by two objects sliding against each other.

Static friction arise when you push the the bag on the flat surface. Sliding friction arises when you push the same bag over an inclined surface.

Regards
 

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Static friction is the force holding an object in place on an incline, such as the cheese in Figure 1. The friction force points against the direction that the object would slide without friction. Static friction keeps gravity from pulling the cheese down the incline.
Sliding friction is the friction which comes into play when the surface of one object moves relative to the surface of another object. ... Static friction arise when you push the the bag on the flat surface. Sliding friction arises when you push the same bag over an inclined surface.
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