A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Volume 1

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F.C. and J. Rivington, 1815 - Mechanical engineering - 58 pages
 

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Page 8 - Reaction is always equal and contrary to action,- or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts. . Of these
Page 8 - Every body continues in its state of rest, or of uniform motion in a right line, until a change is effected by the agency of some mechanical force.
Page 368 - water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then use this proportion : 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.
Page 209 - For so great is the effect of the resistance of the air to projectiles of considerable velocity, that some of those which in the air range only between 2 and 3 miles at the most would in vacuo range about ten times as far, or between 20 and 30 miles. " The effects of this resistance
Page 368 - a piece of some body of known specific gravity; weigh it both in and out of the fluid, and find the loss of weight by taking the difference of these two : then say, As the whole or absolute weight Is to the loss of weight
Page 544 - The resistance to the same surface with different velocities, is*, in these slow motions, nearly as the square of the velocity ; but gradually increases more and more above that proportion as the velocity increases. This is manifest from all the columns ; and the index of the power of the velocity is set down in the
Page 369 - of the compound, and of each ingredient ; and multiply each specific gravity by the difference of the other two : then say, As the greatest product Is to the whole weight of the compound; So is each of the other two products To
Page 270 - revolving system were collected, the same angular velocity will be generated in the same time by a given force acting at any place as would be generated by the same force acting similarly in the body or system itself. When the axis of motion passes through the centre of gravity, then is this centre called the principal centre of gyration.
Page 177 - When a moving body is subjected to the energy of a force which acts on it without interruption, but in a different manner at each instant, the motion is called in general, variable motion. We have instances of variable motions in the unbending of springs : although the velocity continues to be augmented, yet the
Page 368 - As the last remainder Is to the weight of the light body in air ; So is the specific gravity of water To the specific gravity of the body.

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