## 3 thoughts on “3.47”

1. Mattias Turner says:

I think there may be an error at roughly 12:20 into the video. When rearranging the equation of motion for m2, it looks like you accidentally wrote c1 instead of c2 as the coefficient for the x1_dot term. This carries over into the final damping coefficient matrix, where I think the -c1 term should be -c2.

1. tutorpaul says:

You are correct, those should be $c_2$. And I would have caught it if I checked for symmetry.

Thanks!