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Old November 16th 11, 05:26 PM
klacc klacc is offline
First recorded activity by FitnessBanter: Oct 2011
Posts: 23

Originally Posted by prince8585 View Post
hello friends,
how the heck can a child sitting on a stationary
playground swing eventually pump herself up to a wide arc of swing,
sometimes almost high enough to loop-the-loop, and all without
touching her feet to the ground?
It would take longer without touching the ground but it is possible. You move your weight to get moving and keep doing it as you gain momentum.