2006-12-13 03:27:31 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The closest this to principles was "type of friction"
Look here : http://en.wikipedia.org/wiki/Friction#Types_of_friction
2006-12-13 03:34:24 · answer #1 · answered by Lorenzo 3 · 0⤊ 0⤋
Principles of Friction :
1. The force of friction between two surfaces in contact is parallel to the surfaces sliding or tending to slide and always act in a direction opposite to the direction of motion.
2. The force of friction is independent of the area of contact.
3. The maximum force of static friction or the limiting friction is proportional to the normal force which one surface exerts on another.
4. Limiting friction is slightly greater than kinetic friction.
5. The force of kinetic friction is proportional to the normal force between the surface.
6. Over a wide range kinetic friction is independent of the relative velocity of the two surfaces in contact provided the resulting heat do not affect the condition of the surfaces
7. Other things remaining equal, sliding friction is greater than rolling friction
8.
The force of friction depends on the material and the conditions of the surface in contact.
2006-12-13 11:48:35 · answer #2 · answered by saudipta c 5 · 0⤊ 0⤋