Elements of graphic dynamics; an elementary textbook for students of mechanics and engineering (1919)
Andrews, Ewart S. (Ewart Sigmund) · London, Chapman and Hall, Ltd. · leaf 13
n fairly wide apart). The slopeof this tangent is a measure of the slope of the curve at thegiven point. 2 GRAPHIC DYNAMICS Let aghe drawn perpendicular to df, dg (1) then tan 6 = slope of sum curve = — ag Now by the definition of sum curve, the ordinate a 6 is equal to the area of the original… … Fig. 1.—The Sum Curve. Construction of Sum Curve.—Let A CD, Fig. 2, be anyprimitive curve or a straight base A B. Divide A B into anynumber of parts, not necessarily equal (but for convenienceof working they are generally all taken as equal, except thelast, when the base will not divide up…
Mechanics, Applied · Dynamics · Graphic methods
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