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 67
Polar SbaceCurve Fig. 29.—Polar Space Curve with reference to Time. velocity corresponding to any pomt of the polar space curveby means of the following consideration : Consider two points B, C, Pig. 30, very near togetheron the polar space curve, and draw B D at right angles to Polar Spaem Curva … Fig. 30.—Deducing Velocity from Polar Space Curve. 0 C. Then if the angle B 0 C = S < is very small indeed, wemay take 0 B = 0 D. so that if 0 B = s and 0 C = s + 8 s, POLAR DIAGRAMS 57 D 0 will be equal to 8 s, which is the increase in space duringthe short time interval 8 t. Now take the…
Mechanics, Applied · Dynamics · Graphic methods
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