## wach 3 years ago Question in attached file

1. wach

Here you are

2. imron07

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

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

4. imron07

As you can see, the only force contribute for centripetal force is T sin(16.5). |dw:1349306759196:dw|

5. wach

= mv^2 / r?

6. wach

what about the diameter of center

7. imron07

correct,

8. imron07

You need to find T first, T cos 16.5=mg

9. imron07

r is a little bit tricky here. It is the distance to center of rotation.

10. wach

i am calculating it. r = 3.85 +

11. wach

3.85 + 1.06 = r = 4.91

12. imron07

good,

13. wach

so I solve for T and substitute?

14. wach

in the y direction

15. imron07

Yes,

16. wach

ah so I think I got it, it's just algebra from there

17. wach

thank you very much!!!

18. imron07

Okay, good luck :)

19. wach

for part 2, does it only change the mass? and I plug in to find T?

20. wach

sorry last bit haha forgot about it

21. imron07

Yes, because the angle is the same, just change the mass.

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