Newtons 3rd Law

Newtons 3rd Law

• Forces always act in pairs. If body A exerts a force on body B, an equal but opposite force is excerted by body B on body A (action-reaction)
  • Levis p50 example
    • forces in strings
      • direction
      • magnitude, type - Can't push a string.
      • Strongman example p38
  • What is the Normal Force?
    • its direction
    • in FBD's