The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 129
qual in bulk to the compound = 36 -f 30 — 12 = 54 lbs. Weight of water equal in bulk to the wood = 54 — 4 = 50 lbs. But the weight of the wood is 30 lbs., that is bulk for bulk, thewood will be three-fifths of the weight of the water. Conse-quently, the specific gravity of the wood 3= -^ X 1000 =… … sure upon the plane, and A. W that part of the force P,which tends to give motion to the particle along the plane. Put a for the angle, P W C, then. Pressure on the plane = C W — P cos. a ; and the resistanceof friction =: f P COS. a ; The efi*ective pressure tending to move the particle in…
Mechanics, Applied
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