Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 590
of the forces acting upon the correspond-ing bars and pins. Note.—The student should notice that the letters in the GRArHIC STATICS 569 polygon of forces correspond to the forces lettered in the frame-work, as illustrated in Fio-. 357. Problem 304 To determine the jwlygon of forces for a scries of… … /L V Fig. 359.points r, s, t, and n, and supported at the points P and Q. Drawhf to represent the sum of the weights, and bisect it in d. Then(lb and df will represent the supporting forces at P and Q.Draw lines parallel to the several bars, as shown, to determinethe forces acting on the various…
Geometrical drawing
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