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BALL ON A VARIABLE LENGTH STRING








EQUIPMENT

    redball.gif (326 bytes) Ball and String through a Steel Tube
 



NARRATIVE
            A ball is attached to a thick string which passes through a section of steel tubing. Hold the tubing in one hand and the end of the string in the other. Swing the ball in a circle and vary the length of the string from the tubing to the ball to show its effect on angular velocity and centripetal force.