Chapter 5: Force and Motion I

1
Chapter 5 Force and Motion I
2
Newtons Laws

1. If no net force acts on a body, then the bodys
   velocity cannot change.
2. The net force on a body is equal to the product
   of the bodys mass and acceleration.
3. When two bodies interact, the forces on the
   bodies from each other are always equal in
   magnitude and opposite in direction.

3

• Mass, Force and Acceleration
• Unit of force SI newton (N), cgs dyne
• Fma
• Sample Problem 5-3

4
Some particular forces

• Gravitational Force
• Normal Force
• Tension

5
Application

• Sample problems 5-6, 5-7 and 5-8