OCR Text |
Show A Spinning Top. A spinning lop Is kept from falling s- because of the speed wlh which It revolves. The attraction or fiiiivltn-tlnu fiiiivltn-tlnu Is temporarily overcome by' Ihii i ceiitrirugal force produced by the' ro- j tatlon uf the tp when It Is spun. Each '1 part of the top Is snfiject to lljt; same centrifugal force as each other' tiart at the miiiut illstiiuCe from the 1 nxla of rututliin and to no -grerttur force, s.i that there Is no cause for the top being pulled In any particular particu-lar direction by the force of, gravity. j As soon as tlio centrifugal force begins to leasm hcrmisu of lessening speed of rotation thu attraction of gravity begins to bn exerted again mid the top begins to wnliblo When the spinning motion dliiilnlshea to mi.i!ni.'- "iy""-' extent that the atttyetlon of gravity - , omch greater thun the centrifugal I ., 'to ihc top falls to one side. |