Newton's Third Law and Frictions

Newton's Third Law, general friction notes

What is Newton’s Third Law?

F_AB = -F_BA

Definition: Force

Interaction between 2 objects

For every force, there should an object ___ a force, and object that ___ the force

gives, receives

Definition: Static Friction

Frictional force that prevents motion between 2 surfaces

What determines the direction for static friction?

The direction of the object is going in relation to a surface. The direction is OPPOSITE the object

What determines the magnitude for static friction?

It makes the net force 0 until max static friction is met. In other words, it can’t be large enough that the object moves

Definition: Kinetic/Sliding Friction

The resistance of relative motion between 2 surfaces that are sliding past each other

What happens once static friction reaches it max?

The friction changes into kinetic and moves from its location

No longer stationary