A treatise on gyrostatics and rotational motion . Fro. 29(o> Pro. ..>(<)? Some different forms of gyrostat are here pictured [Fig. 29]. The nearlyenclosing cast- of the Kelvin gyrostat [Fig. 29(a)] was designed rather tosurest the idea of a bodv which, though identical in outward form withother bodies, has yet peculiar properties which are only to be explained bymotions of internal parts, the existence of which is inferred from a studyof the bodys dynamical behaviour. Fig. 29 (b) shows one of Dr. J. < 1. Grays motor gyrostats, supported on askate. The flywheel is the rotor of a con
A treatise on gyrostatics and rotational motion . Fro. 29(o> Pro. ..>(<)? Some different forms of gyrostat are here pictured [Fig. 29]. The nearlyenclosing cast- of the Kelvin gyrostat [Fig. 29(a)] was designed rather tosurest the idea of a bodv which, though identical in outward form withother bodies, has yet peculiar properties which are only to be explained bymotions of internal parts, the existence of which is inferred from a studyof the bodys dynamical behaviour. Fig. 29 (b) shows one of Dr. J. < 1. Grays motor gyrostats, supported on askate. The flywheel is the rotor of a continuous current electric motor,which can be driven from an ordinary electric light circuit. 128 GYROSTATICS CHAP. Fig. 30, (a ) and (6), shows an effective form of gyrostat, easily constructedby utilising a bicycle wheel on its ball bearings, as recommended bySir George Greenhill. In diagram (a) the wheel is shown supported atone end of the axle, which rests in a cup. In experiments with such awheel it is advisable, for safety, always to emplo
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