poulinphysics.weebly.compoulinphysics.weebly.com/uploads/2/2/8/5/22853562/...at is its length? If...
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poulinphysics.weebly.compoulinphysics.weebly.com/uploads/2/2/8/5/22853562/...at is its length? If you hang a dumbbell from a vertically-suspended spring and start it oscillating up-and-down,
