The Controversial Physics of Curling

The educational video channel SmarterEveryDay had an episode on the physics of curling. Why do curling stones turn in the direction of their rotation, while other objects (like a glass on a table) behave the opposite way? Turns out we don’t really know!

This video shows you the two different scientific explanations, as well as explaining  curling ice prep (pebbling) and how sweeping affects a stone’s path.