I have two equations:

Question

#1)
Tcos(theta)- 6.86=0

#2)
Tsin(theta) = mass X acceleration

I know that my acceleration is velociy squared/ radius (my given radius is 40cm)

I'm supposed to solve for T and angular acceleration. I know I'd be able to do that if I could find what theta is. Can you give my instruction on how to find theta? (just how to find theta, I want to solve the rest of the problem on my own.)

thanks

Answer 1

T=6.86/cosTheta

6.86/cosTheta*sinTheat= ma
tan theta= ma/6.86
solve for theta. Now go back and solve for T