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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Replying to @fermatslibrary
The only thing I quibble with in this animation is that there is energy transferred to the spinning when he pulls the string, making the effect look more exaggerated.
9 replies 1 retweet 76 likes -
Replying to @InertialObservr @fermatslibrary
That IS the effect isn’t it: Smaller radius, faster rotation, and vice versa...right?
1 reply 0 retweets 0 likes
Replying to @AyzGreenwood @fermatslibrary
yes it is the effect but the relation is only so simple when there is no external torque (see my reply to my previous tweet)
10:08 AM - 9 Nov 2019
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