Recent content by Eric Williams

I'll have to practice with the equation editor, I apologize, but yes, I used your first equation with the kinetic energy. I wasn't sure how to use the second equation equation you wrote down, with the sum of the momentums equal to zero. By that I mean I wasn't sure what to solve for to create a...

Thank you Chet, I wasn't expecting a reply so fast, but I went right to work when I saw your comment. Here's what I've got: ∑Kf + ΔEs = 0 KA + KB = -ΔEs I hope I'm not wrong, but this seems right as well : -ΔEs = Es I'm just thinking I'm not going to like that negative sign, and since all of the...

Hi mfb, Sorry I didn't sure more of the work, I was just intimidated by the prospect of typing out all the algebra. We just covered inertial reference frames so I'll give that approach a try. Thank you! Oh, and I just found the toolbar with a long list of mathematical expressions. That will be...

Homework Statement An assembled system consists of cart A of inertia mA, cart B of inertia mB, and a spring of negligible inertia, clamped together so that the fully compressed spring is aligned between the front end of cart B and the back end of cart A. The internal energy of the system...