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Forces

  1. Force
    • mechanical interaction between an object and its surroundings
    • --push or pull of an object on another
  2. Force is a…
    • vector
    • --magnitude
    • --direction
    • --pt of application
  3. Internal forces
    forces that act within the object or system whose motion is being investigated
  4. External forces
    • forces that act on an object as a result of its interaction with the environment surrounding it
    • --ex: contact, non contact
  5. Contact external forces
    • one object touching another
    • -- PT pushing on patient
    • -- ex: normal forces, friction forces
  6. Non contact external forces
    • forces that occur even if the objects are not touching another
    • -- gravity
  7. Normal force
    perpendicular from ground
  8. Friction force
    parallel to the ground
  9. Weight
    force of gravity acting on an object
  10. Static Equilibrium
    • at rest or moving at a constant acceleration
    • -- net force = 0; otherwise would be accelerating
  11. Free body diagram
    object with all the forces on it
Author
pugsrule915
ID
263488
Card Set
Forces
Description
Forces
Updated

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