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wach

  • 2 years ago

Question in attached file

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  1. wach
    • 2 years ago
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    Here you are

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  2. imron07
    • 2 years ago
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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|

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

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

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

  6. wach
    • 2 years ago
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    what about the diameter of center

  7. imron07
    • 2 years ago
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    correct,

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

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

  10. wach
    • 2 years ago
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    i am calculating it. r = 3.85 +

  11. wach
    • 2 years ago
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    3.85 + 1.06 = r = 4.91

  12. imron07
    • 2 years ago
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    good,

  13. wach
    • 2 years ago
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    so I solve for T and substitute?

  14. wach
    • 2 years ago
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    in the y direction

  15. imron07
    • 2 years ago
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    Yes,

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

  17. wach
    • 2 years ago
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    thank you very much!!!

  18. imron07
    • 2 years ago
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    Okay, good luck :)

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

  20. wach
    • 2 years ago
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    sorry last bit haha forgot about it

  21. imron07
    • 2 years ago
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    Yes, because the angle is the same, just change the mass.

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