A demonstration of the conservation of angular momentum using a Hoberman sphere. Angular momentum depends on the rotational velocity of an object, and on its rotational inertia. When an object changes its shape, its angular velocity will also change.pic.twitter.com/UUQqALp3HW
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Is there, though... His energy is constrained to the vertical, doesn't look like it can transfer to rotational
yes .. it's applying an external torque along the rotation axis .. i.e. it's not a closed system
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when he lets it drop its a somewhat more faithful representation
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I don't see how that torque is being developed?
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