g held outwardly against the rails by centri- ing, and the intersections will be the pointsof the curve inclined plane, although it travels over a longer dis- fugal force. The descent of the ball is accelerated. The required. Through these points the curve is drawn and tance. In the case of the… … ning is practically vertical. This curve has been called form to this carve. The track, when completed, must high, six inches in diameter, the rails being % inch the curve of swiftest descent, as a falling body passes sustain the same relation to a horizontal line as the apart. — 4-9 over it from…
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