How to find the angle from the vertical?

[xbabybrittyx]

I have a question in my homework that I CANNNNOT figure out! it's 40n and feels like 47n when it swings.

i just want to know the formula i would use to figure out the angle.

thanks (:

 

[tiny-tim]

Welcome to PF!

Hi xbabybrittyx! Welcome to PF!

it's 40n and feels like 47n when it swings.

(i assume this is a physics problem )

Hint: centripetal acceleration