Dr. Andy Ruina at Cornell posing a rotating mass brain teaser. Very slick.
Dr. Andy Ruina at Cornell pulling backwards on a bicycle pedal. What happens?
Offset Slider-Crank Mechanism from the Wolfram Demonstrations Project by Erik Mahieu
Play around with a slider-crank simulation here.
Courtesy of the Wolfram Demonstrations Project
(Trouble? Download and install the Wolfram CDF player here. We use it a lot, and it does some really cool stuff.