Double gyroscope
YOUR LINK HERE:
http://youtube.com/watch?v=bzbVwiIeM0M
( Adolf Cortel 2009) Double gyroscope. [ if interested in easily building a double gyroscope from an available toy, have a look of muy new video , January 2022: • Double Gyroscope DIY with Gyrobot Toys ] The weels can turn in the same or in opposite directions. When the angular momentum adds it behaves like a gyroscope. However, if the weels turn in opposite directions the angular momentum cancel and nothing particular is observed. This means that the magnitude responsible for the behaviour of a gyroscope (angular momentum) depends on the sense of rotation so, it is a vector
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