sci || teach || physics || on Instagram: "The clip shows a runner inside a bright, octagon-shaped skate bowl using fast circular motion to build centripetal force, letting them run up the steep walls and climb out of a pit roughly a meter deep without any assistance 🌀 . . The stunt follows the same physics as the classic “wall of death” carnival ride. As the runner moves in a circle, the wall pushes inward with a normal force that supplies the required centripetal acceleration (mv²/r), countera