) Draw two free-body diagrams for the rotating mass in this experiment, showing all the forces acting on it when



) Draw two free-body diagrams for the rotating mass in this experiment, showing all the forces acting on it when (a) it is revolving at radius r and is attached to the Center Post spring, and (b) it is revolving while hanging but not attached to the spring. 2) Why is it necessary to level the rotating platform




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