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**[SOLVED] Rotational Force Problem**

## Homework Statement

Consider a conical pendulum with a 89.0 kg bob on a 10.0 m wire making an angle of = 5.00° with the vertical (Fig. P6.9).

http://img89.imageshack.us/my.php?image=p613qy9.gif

## The Attempt at a Solution

I am having alot of trouble figuring this out. I have tried to set up force diagrams but I am getting confused. I know that the force is the y direction is just mg but to make it this way it would have to be

[tex]Tsin(\theta) - mgsin(\theta) = 0[/tex] and I don't understand why it would be mg multiplied by the sine of the angle.

Also, for the second part I don't understand why the answer is not just mg times the sin of the angle.

Can someone help me figure out this problem? Thanks.