Force & Equilibrium

1. Is LeBron James in equilibrium?

2. Is the ball in equilibrium?

3. The Pacman or Ricky Hatton?

4. FORCE & EQUILIBRIUM

5. Force Commonly imagined as a push or pull on an object Vector quantity May be a contact force or a field force SI unit of newton (N)

6. Pushing Force Compressive force Creates compression

7. Pulling Force Tensile force Creates tension The tension is the same at all points in the rope

8. Contact Force Results from physical contact between two objects

9. Field Force Acts between disconnected objects

10. Characteristics of a Force Magnitude Direction Point of Application

11. Effects of Force 1. Changes the state of motion of a body - accelerates the body 2. Deformation - mass is the same but volume changes

12. Equilibrium Possessed by a body that is either at rest or moving in a constant velocity The net force acting on the object is zero,

13. Static Equilibrium T he equilibrium possessed by bodies at rest. The velocity of the body is zero.

14. Dynamic Equilibrium The equilibrium possessed by bodies in motion. The velocity of the body does not change; its acceleration is zero.