Recent content by ianbearpig

I talked to a friend and he says I should come up with the equations for each situation then take the derivative of each of those equations. Does this sound right?

I'm having trouble figuring out this problem. I'm not sure what equations to use or how to start it, can anyone help?? 1. A ball is attached to a string (extentionless and massless, of course) of length L. The string is attached to a frictionless pivot point. When the string is vertical, the...