Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 135
arthsattraction of gravity is pullingthe performer straight down,and the centrifugal force wouldof itself throw her outwards hori-zontally. The resultant or com-bined effect of both acts is seenin the exact direction in whichshe is leaning, and it presses herfeet on the horses back, theanimal… … Fig. 46.—Centrifugal Force. io8 RAIL WA YS. are placed so that the slope counteracts the centrifugal force when thetrain travels at about the rate of twenty miles per hour. A very important part of the mechanism of a railway is the mode ofpassing trains from one line of rails to another. Engines…
Inventions
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