AP Physics Chapter 5 Study Guide
Applying Newton's Laws

Interacting Objects

interacting objects

 

interacting objects

 

interacting object

 

Example 20

contact forces

Two boxes–one large and heavy, the other small and light–rest on a smooth, level floor. You push with a force vector on either the small box or the large box. Is the contact force between the two boxes (a) the same in either case, (b) when you push on the large box, or (c) larger when you push on the small box?

 

 

 

 

 

 

 

 

 

 

Example 21

contact force

A box of mass mass rests on a smooth, horizontal floor next to a box of mass mass. If you push on box 1 with a horizontal force of magnitude F = 20.0 N, (a) what is the acceleration of the boxes? (b) What is the force of contact between the boxes?

 

 

 

Video

 

What happens if the relative position of the boxes is reversed? (a) What is the acceleration of the boxes? (b) What is the force of contact between the boxes? (c) What is the total force acting on box 2?

contact forces

 

 

 

 

 

Ropes and Pulleys

tension

tension

 

coupled

 

coupled

 

coupled

 

atwood

 

Atwood Lab