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The principles of mechanics : explaining and demonstrating the general laws of motion, the laws of gravity, motion of descending bodies, projectiles, mechanic powers, pendulums, centers of gravity, &cstrength and stress of timber, hydrostatics, and construction of machines : a work very necessary to be known, by all gentlemen, and others, that desire to have an insight into the works of nature and art : and extremely useful to all sorts of artificers, particularly to architects, engineers, shipwrights, millwrights, watchmakers, &cor any that work in a mechanical way : illustrated with forty-th

The principles of mechanics : explaining and demonstrating the general laws of motion, the laws of gravity, motion of descending bodies, projectiles, mechanic powers, pendulums, centers of gravity, &cstrength and stress of timber, hydrostatics, and construction of machines : a work very necessary to be known, by all gentlemen, and others, that desire to have an insight into the works of nature and art : and extremely useful to all sorts of artificers, particularly to architects, engineers, shipwrights, millwrights, watchmakers, &cor any that work in a mechanical way : illustrated with forty-th Stock Photo
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Contributor:

The Reading Room / Alamy Stock Photo

Image ID:

2AXFX66

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7.2 MB (0.3 MB Compressed download)

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Dimensions:

1575 x 1587 px | 26.7 x 26.9 cm | 10.5 x 10.6 inches | 150dpi

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The principles of mechanics : explaining and demonstrating the general laws of motion, the laws of gravity, motion of descending bodies, projectiles, mechanic powers, pendulums, centers of gravity, &cstrength and stress of timber, hydrostatics, and construction of machines : a work very necessary to be known, by all gentlemen, and others, that desire to have an insight into the works of nature and art : and extremely useful to all sorts of artificers, particularly to architects, engineers, shipwrights, millwrights, watchmakers, &cor any that work in a mechanical way : illustrated with forty-three copper-plates . 86 s T r. Tl.Vf.^.i 86. r [ 87 ] SECT. VIII. ^e quantity anddireSiion of the prejfure ofbsamsof timberi by their weights, and the forcesneceffary to fuflain the?n. PROP. LXII. Jf a learn of timher he fupported at C and B, lying upon the ivallACE, with one end. And if G be the center of gravity of thewhole Wright fujlaimd: and the line FGHbe draivnperpendicularto the horizon, and CF and BH to CB, and BFdrazvn; I fay.The weight of the whole hodyhHPreffure at the top C IbHTLruJl or freffure at the bafe B FB, are refpeSlively as J andin thefefeveraldireHionu If the beam fiipport any weight, the beam and weight muftbe confidered as one body, whofe center of gravity is G Thenthe end C is fupported by the plane BCE ; and (by tor 3. Prop.Llll.) the other end B mny be fuppoled to be fuftained by z.-plane perpendicular to BF; therefore (by Cor. i. Prop. LlII.)the weight and forces at C and B, are refpeftively zi FH, BH,and BF. Cor. I. Produce FB towards ^ then B<^is the dirtolicn of thefreffure at

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