1. Force Magnitude 1 Tension Elastic Force Gravity Normal Force Friction Drag

2. Force Magnitude 2 Tension The magnitude of the tension is the same everywhere in the rope.

3. Force Magnitude 3 Name of Force Symbol When does this force occur? Where does this force occur? Magnitude Associated Energy Tension If an object that is experiencing the force is pulling but not stretching another object On the object that is experiencing the force at the point where the pulling occurs Determined using Newton’s Second Law No associated energy

4. Force Magnitude 4 Spring Force

5. Force Magnitude 5 Name of Force Symbol When does this force occur? Where does this force occur? Magnitude Associated Energy Spring Force On the object experiencing the force where it connects to the object that stretches/compresses Elastic Potential Energy If an object that is experiencing the force is stretching (or compressing) another object

6. Force Magnitude 6 Gravity

7. Force Magnitude 7 Name of Force Symbol When does this force occur? Where does this force occur? Magnitude Associated Energy Gravity or At the center-of-mass of the object receiving the force or Gravitational Potential Energy If there are two massive objects present

8. Force Magnitude 8 Gravity (near the earth’s surface) m Mass of the earth6x10 24 kg Radius of the earth6.375x10 6 m

9. Force Magnitude 9 Normal Force m N m N w

10. Force Magnitude 10 Name of Force Symbol When does this force occur? Where does this force occur? Magnitude Associated Energy Normal Force or If an object touches the surface of another object On the object receiving the force at the point(s) where it touches the surface Determined using Newton’s Second Law No associated energy

11. Force Magnitude 11 Friction m N f Direction of motion or possible motion m N f

12. Force Magnitude 12 Name of Force Symbol When does this force occur? Where does this force occur? Magnitude Associated Energy Friction or If an object touches the surface of another object On the object receiving the force at the point(s) where it touches the surface or Thermal Energy

13. Force Magnitude 13 Drag D

14. Force Magnitude 14 Name of Force Symbol When does this force occur? Where does this force occur? Magnitude Associated Energy Drag If an object is moving through a liquid or gas. On the object receiving the force at the point(s) where it touches the liquid or gas Thermal Energy