Yesterday, we talked about Sherlock Holmes Adventure of the Priory School, in which Holmes deduces the direction of a bike’s travel by examining the depth of the impression left by each wheel.
In this day of slickly science and math videos from the likes of John and Hank Green, it’s kind of refreshing to see an old school math demonstration that gets the facts across.
Today, the Simons Foundation Mathematical Impressions blog features a mental puzzle involving a bicycle and a piece of string. If you pull backwards on a bicycle pedal with a string, will the Cannondale Super V 900 mountain bike roll forward? Or backward?