Circular motion: ring on string

[Faiq]

Homework Statement

Homework Equations

F = mw^2r
[/B]

The Attempt at a Solution

For part a, I can't get the constant of half with the tan a
I am getting tan a = w^2l/g

 

[BvU]

Post your work. What force do you use to compensate $mg$ ?

 

[Doc Al]

For part a, I can't get the constant of half with the tan a
I am getting tan a = w^2l/g

Show how you got that.

 

[Delta2]

Think carefully what is the total force acting in the y-axis on the ring. Its not $T\cos{a}-mg$ as you probably think. It is rather $T(1+\cos{a})-mg$ (why??)

 

[Faiq]

I did it thanks guys