Recent content by Vickitty

I used mv = (M + m)b^2w/3, which is including both the door and the bullet, isn't it? Or do you mean in the initial momentum of the bullet as well? The door has no momentum to start off with though.

Sorry for so many questions, just coming back here after going through all the review questions I could get. Here we go: A cowboy wants to open a saloon door with a revolver shot. The swinging door (Mass M, width b) is hit on the very edge and the bullet (Mass m, velocity v) lodges into the...

Thank you, that's a great help. I think I've got it now!

Another question, in which I believe I've gotten the same wrong answer two different ways now. Muons have a mass m = 105 MeV/c^2. They are accelerated to a kinetic energy of 2 TeV in a storage ring with radius r = 2 km. A student speculates that since muons have a lifetime of only T =...

I've been having troubles figuring out this question, because the cart is not actually attached to either spring nor always touching one. Any help would be appreciated. A cart moves without friction between two springs, back and forth. Both springs have a spring contact of D = 72 N/m. At...