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The force of friction always opposes the applied force. In the above activity, the force of friction acts between the surface of the book and the surface of the table. Is the friction the same for all the surfaces? Does it depend on the smoothness of the surfaces? Let us find out. 12.2 Factors affecting Friction. Activity 12.2.
12 Φεβ 2017 · This document summarizes friction in physics. It defines friction as the force that opposes the relative motion between two surfaces in contact. It then discusses the factors that affect friction, the different types of friction (static, sliding, rolling, fluid), their definitions and examples.
12 Friction. 1. Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play. (a) only if the objects are solid. (b) only if one of the two objects is liquid. (c) only if one of the two objects is gaseous. 2.
Friction is the force that resists the motion of two surfaces moving past one another. What Causes Friction? Friction is caused by intermolecular (IM) attractions between particles of the two adjoining surfaces. Two Types of Friction. 1. Static Friction (Ffrict-static)
FRICTION. Friction is force acting between two surfaces in contact and it tends to oppose the motion of one surface over the other. Basically, friction is due to the interlocking of tiny projections on the surfaces as they are in contact.
The opposing forces such as friction (solids) and viscous forces (for fluids) are always present in the natural world. This explains why forces by external agencies are necessary to overcome the frictional forces to keep bodies in uniform motion. Now we understand where Aristotle went wrong. He coded this practical experience
List the various types of friction. Calculate the magnitude of static and kinetic friction, and use these in problems involving Newton’s laws of motion. When a body is in motion, it has resistance because the body interacts with its surroundings. This resistance is a force of friction.
