FIELD: physics.
SUBSTANCE: demonstration spinning top has a bell-shaped body 1, a sharpened rod 2 configured to rest on a bearing 7. A ball bearing 4 is rigidly mounted by an outer ring in the bell-shaped body 1, and by an inner ring into a threaded bushing 3, to enable movement of the sharpened rod 2 along the axis of symmetry of the bell-shaped body 1 in the threaded bushing 3 and fixation therein.
EFFECT: easier spinning of the bell-shaped body to a large number of revolutions, longer demonstration time.
3 cl, 3 dwg
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