Welcome to Lesson 7 of Dianna's Intro Physics Class, where we unravel the mysteries behind circular motion. Today's theme: "You spin me right round, baby, right round." Prepare to be captivated as we explore the forces that keep objects moving in circles, from the dynamics of a skateboarding trick to the vast cosmos.
In the annals of standardized testing, one question stood out from the rest, mystifying thousands of students in 1982. The question was deceptively simple, yet it stumped every single test-taker. It reads: "In the figure above, the radius of circle A is 1/3 the radius of circle B. Starting from the position shown in the figure, circle A rolls around circle B. At the end of how many revolutions of circle A will the center of the circle first reach its starting point?"