The values for centripetal force, Fc, in the table are obtained through an experiment involving a rotating shaft, a spring, and a plumb bob. The shaft is rotated at a speed such that the spring stretches enough for the tip of the bob to align with the end of the pointer. At this point, the plumb bob and the spring are vertical and perpendicular to the centripetal force. The forces pulling the plumb bob inward (centripetal force) and pushing it outward are balanced. To calculate the centripeta