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Physics
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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|
which type of T is it. I'm used to using Tcos(theta) or Tsin(theta)

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Other answers:

As you can see, the only force contribute for centripetal force is T sin(16.5). |dw:1349306759196:dw|
= mv^2 / r?
what about the diameter of center
correct,
You need to find T first, T cos 16.5=mg
r is a little bit tricky here. It is the distance to center of rotation.
i am calculating it. r = 3.85 +
3.85 + 1.06 = r = 4.91
good,
so I solve for T and substitute?
in the y direction
Yes,
ah so I think I got it, it's just algebra from there
thank you very much!!!
Okay, good luck :)
for part 2, does it only change the mass? and I plug in to find T?
sorry last bit haha forgot about it
Yes, because the angle is the same, just change the mass.

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