Recent content by HSSN19

Isn't this just constant acceleration motion? Just use the constant acceleration formulae to find the acceleration first. Useful formulae: v2 - vi2 = 2aΔx v=vi + at

Oh man, I already submitted the homework. I knew my "initial" and "final" L's didn't make any sense since the events are simultaneous. So the answer should be the same but negative now, I guess. Thanks!

Wait, what? I'm confused now. Why is the total L zero? Don't you mean the change in L is zero (L is conserved)?

Nah I don't think linear momentum should be used in problems like this. About the 2, if you're talking about the square, then no there shouldn't be a square. The definition of angular momentum is the cross product between r and linear momentum. The other equation has a square because it's...

Homework Statement This is a question from the physics textbook Don't Panic Volume I, chapter XIV. A man, mass M, stands on a massless rod which is free to rotate about its center in the horizontal plane. The man has a gun (massless) with one bullet, mass m. He shoots the bullet with...

Oh right, forgot the square. Thank you very much!

That's odd. I'm sure it was in the attachment... Oh well. A massless rod of length B is pivoted at its center so that it can rotate in the horizontal plane. Two ants are riding this rod in the locations shown (both B/4 away from the center) and the rod is rotating with angular velocity ω in the...

Homework Statement This is a problem about angular momentum and torque from the physics textbook Don't Panic Volume I. Attached is a screenshot of the problem. Homework Equations L = mr2ω The Attempt at a Solution The angular momentum must be conserved to keep ω constant...