# Two damped pendulums with different masses.

1. Mar 17, 2010

### TheTourist

Two simple pendulums with the same length L but different masses, m1 and m2=2*m1, are set swinging at the same time with the same initial amplitude. Both pendulums are damped by the same force, Fdamp=-$$\gamma$$s(dot). Eventually, the amplitude of the lighter pendulum decreases to half its initial value.
$$\gamma$$

I have found the equation $$\frac{A(t)}{Ao}$$=e(-$$\gamma$$t/2m), however I am not sure how to apply it correctly.

2. Mar 17, 2010

### rock.freak667

What do you need to find in the first place?