Question

reason of static friction

Answer 1

It is caused by a slight chemical attraction between two objects, called Adhesion, which are prone to static friction. Also, it is harder to start pushing an object, rather than keep it in motion, which makes static friction the strongest

Answer 2

This is because it's harder to get an object moving than it is to keep it moving.static friction is caused by adhesion, a light chemical attraction between two surfaces. ... On a flat surface, the normal force is equal to the force of gravity acting down on the object.