- #1

- 23

- 0

## Homework Statement

Two masses, m1=750g and m2=500g, act as two pendulums with length L=2.0m. At t=0, they are released without an initial velocity, the former at -10° and the latter at 20°.

At what angle will they collide?

## Homework Equations

θ(t)=Acos(wt)

sinθ=θ (small angle)

w=sqrt(g/l)

## The Attempt at a Solution

I've found the frequency, which is 2.21 rad/s, and is identical for both masses. There are no phase constants as they are released from rest. So now I have:

θ1(t)=-0.175*cos(2.21t)

θ2(t)=0.349*cos(2.21t)

Now I can't just set them equal to each other, the cosines will cancel out and I'll be left with -.175=.349...

Sorry for not using LaTex, I really don't get it =/

Thank you,