1. Force Diagrams

2. Different types Type of Force Exampels Push Pull (Tension) Gravity
Surface (Normal)
Friction
Air Resistance
Weight

3. Representing Forces When drawing forces, we use VECTORS.
Arrows point in the direction of the force.
Length = strength *Longer arrow = stronger force

4. Balanced vs. Unbalanced. Balanced – No acceleration
Balanced vs. Unbalanced Balanced – No acceleration Unbalanced – Acceleration to the bigger Force

5. Net Force = Total Force. Same direction = add
Net Force = Total Force Same direction = add Opposite direction = subtract
5 N
10 N
20 N
10 N
10 N
10 N

6. Drawing Force Diagrams
Drawing that shows direction and strength of ALL forces acting on the object
Length = strength
Label arrows (with units)
Arrow starts at the object (Do not stab your drawing)

7. Bad Diagram
50 N
20 N

9. Extra tips Fg is always straight down
Fn is perpendicular to the surface (walls don’t usually push up)
Ff is always opposite of motion!