Physics

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Author:
andreabyerly
ID:
46840
Filename:
Physics
Updated:
2010-11-02 19:21:33
Tags:
Circular Movement
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Description:
Physics- Circular Movement
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  1. π = ___ degrees
    180
  2. ω:
    angular speed. Similar to velocity
  3. ω =
    Δθ/Δt
  4. Vt=


    (tangential speed)
  5. P:
    Period. Time it takes to complete one revolution.
  6. f:
    Frequency. How many revolutions per second
  7. Formula for frequency:
    f=1/T
  8. α:
    angular acceleration
  9. Formula for angular acceleration
    α=Δω/Δt
  10. Ac:
    centripetal acceleration. Moves towards center of circle.
  11. Law of gravitation
    Fg=Gm1m2/r2

    • r: disance between m1 and m2
    • G=6.67 x 10-11
  12. Fc:
    Centripetal Force. Net force pointing towards center
  13. Formula for Centripetal Force:
    Fc=mac

    Fc=mv2/r
  14. Formula for Torque
    τ = rF = rFsinθ
  15. Torque is positive if
    counterclockwise
  16. Torque is negative if
    clockwise
  17. Translational Motion
    normal velocity
  18. Rotational Motion
    angular velocity
  19. Newton's 2nd Law: Rotational Form
    Στ=Iα
  20. Rotational Kinetic Energy
    Kr=1/2Iω2
  21. Translational Kinetic Energy
    Kt=1/2mv2
  22. Conservation of Angular Momentum
    Ioωo=Iω
  23. θ units
    radians
  24. ω units
    rad/s
  25. α units
    rad/s2

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