Observe and explore circular motion with an easy-to-construct centripetal force chamber. Students test how increasing an object's mass affects its velocity and use their data to calculate the centripetal force. Incorporate the provided extension activities to examine the effect of the radius on velocity. Centripetal Force Chamber materials are sufficient for 1 small student group. Includes instructions; a balance (0.01 g), timers, glue, and general classroom supplies are needed but not supplied.