Recent content by rdlcsh

Sounds like you've either never had a really terrible class or never had a really fantastic teacher. Of course the most important thing is the student. But on the last two exams, the class averages were 39% and 30%. Is that really because the class is filled with bad students? All I'm saying...

Sorry to bother everyone with this ridiculous problem. I've found out that the "correct" answer is 2.048 m, which is of course impossible. I guess that's what I get for going to a crappy college.

That's the result I kept getting, but that's not the correct answer. I guessed that angular kinetic energy must not be the same as linear kinetic or potential energy. I was wrong in writing: 1/2 *I*w^2 = mgh I still don't know how to do this problem. Any other ideas?

Homework Statement A thin rod of length 1.4m and mass .2kg is suspended freely from one end. It is pulled to one side and then allowed to swing like a pendulum, passing through its lowest position with angular speed 7.84 rad/s. Neglecting friction and air resistance, find how far above that...