Theoretical and Practical Mechanics: Designed Principally for Practical Men

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J. Weale, 1848 - 325 Seiten

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Seite 179 - As the weight lost in water is to the whole, or absolute weight ; so is the specific gravity of water ' " to "the specific gravity 'of the body . 2.
Seite 24 - ... the power, multiplied by its distance from the fulcrum, is equal to the weight, multiplied by its distance from the same point. Prom this, simple rules may be deduced for calculation. To know the power to be applied, at a certain distance from the fulcrum...
Seite 179 - ... so that the mass compounded of the two may sink together. Weigh the denser body and the compound mass, separately, both in water and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then...
Seite 13 - Hence the moment of the resultant is equal to the sum of the moments of its components.
Seite 184 - The workmen thought that substituting part silver was only a proper <perquisite; which taking air, Archimedes was appointed to examine it ; who, on putting...
Seite 51 - The centres of gravity of the surface of a cylinder, of a cone, and of a conic frustrum, are respectively at the same distances from the origin as are the centres of gravity, of the parallelogram, triangle, and trapezoid, which are vertical sections of the respective solids.
Seite 31 - In the wheel and axle, an equilibrium takes place when the power multiplied by the radius of the wheel, is equal to the weight multiplied by the radius of the axle ; or, P : W : : CA : CB.
Seite 179 - The reason is, all bodies lose some of their weight in a fluid, and the weight which a body loses in a fluid, is to its whole weight, as the specific gravity of the fluid is to that of the body.
Seite 179 - If the specific gravity of the fluid be greater than that of the body, then the quantity of fluid displaced by the part immersed is equal to the weight of the whole body.
Seite 253 - One-third of the above weights is considered sufficient in most cases for a permanent load. To find the strength of any rectangular beam supported at both ends and loaded in the middle, or supported in the middle and loaded at both ends.

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