The Physics of Bikes

As part of Cal Day Professor Joel Fajans of the Physics Department describes the physics involved in riding a bike. How, in order to turn left you must turn right and that angular momentum only plays a minor part. He tells us what trail is and how it's the most important thing in determining how a bike behaves. He also discusses safety and why you should wear a helmet. The 2014 Academic Ranking of World Universities ranked Berkeley Physics the #1 physics depertment worldwide, beating Princeton, MIT, Harvard and Cal Tech. Ride your bike to Berkeley and study with the best.