“Find the center of gravity of two of the bodies, as W1, and W4, in fig 4. Assume that the weight of both bodies is concentrated at C1, and find the center of gravity of this combined weight at C1, and the weight of W2; let it be at C2; then find the center of gravity of the combined weights of W1, W4, W2 (concentrated at C2), and W2; let it be at C; then C will be the center of gravity of the four bodies.” —Hallock 1905
V. I. Hallock I.C.S. Refrence Library (Scranton: International Textbook Company, 1905) 7:13
2400×2391, 327.2 KiB
1024×1020, 49.1 KiB
640×637, 28.3 KiB
320×318, 11.1 KiB