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wach

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  • one year ago
  • one year ago

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  1. wach
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    Here you are

    • one year ago
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  2. imron07
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    Okay, here's the strategy: 1) We have to find angular velocity omega. 2) In order to do this, we need to analyze the force in each seat: |dw:1349306339134:dw|

    • one year ago
  3. wach
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    which type of T is it. I'm used to using Tcos(theta) or Tsin(theta)

    • one year ago
  4. imron07
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    As you can see, the only force contribute for centripetal force is T sin(16.5). |dw:1349306759196:dw|

    • one year ago
  5. wach
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    = mv^2 / r?

    • one year ago
  6. wach
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    what about the diameter of center

    • one year ago
  7. imron07
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    correct,

    • one year ago
  8. imron07
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    You need to find T first, T cos 16.5=mg

    • one year ago
  9. imron07
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    r is a little bit tricky here. It is the distance to center of rotation.

    • one year ago
  10. wach
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    i am calculating it. r = 3.85 +

    • one year ago
  11. wach
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    3.85 + 1.06 = r = 4.91

    • one year ago
  12. imron07
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    good,

    • one year ago
  13. wach
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    so I solve for T and substitute?

    • one year ago
  14. wach
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    in the y direction

    • one year ago
  15. imron07
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    Yes,

    • one year ago
  16. wach
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    ah so I think I got it, it's just algebra from there

    • one year ago
  17. wach
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    thank you very much!!!

    • one year ago
  18. imron07
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    Okay, good luck :)

    • one year ago
  19. wach
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    for part 2, does it only change the mass? and I plug in to find T?

    • one year ago
  20. wach
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    sorry last bit haha forgot about it

    • one year ago
  21. imron07
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    Yes, because the angle is the same, just change the mass.

    • one year ago
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