Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 293
d attach a pencil at the end ofthe string. Keeping the string tight,gradually unwrap the string, and sotrace out the required curve. From themethod of obtaining the curve, it isevident that the arc £J is equal to thelength of the line ED, and that the lineED is normal to the curve at the point D.To…
Machinery, Kinematics of
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