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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when he lets it drop its a somewhat more faithful representation
good question, and yes as it appears to be spinning on a torsion wire so you would get a same effect. The two would in effect cancel for the purpose of the demonstration if the force he provided from pulling if precisely the same as the force applied by gravity
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yes but if you look at the equation i posted the integral is an integral over time and the pull itself as a function of time (by observation) is not equal .. besides gravity is acting in both cases
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