The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 109
CONSTRUCTION. Through the middle, or centerof gravity of the gate draw thevertical line D C, join the pointsD and 0, then D 0 will be thedirection of the pressure uponthe pin. Take D B equal to theunits in the weight of the gate,and construct the parallelogramof pressures F D B Q, then the…
Mechanics, Applied
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