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

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F.C. and J. Rivington, 1815 - 58 من الصفحات
 

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الصفحة vii - Studies serve for delight, for ornament, and for ability. Their chief use for delight, is in privateness and retiring; for ornament, is in discourse; and for ability, is in the judgment and disposition of business...
الصفحة 217 - ... part more range for a double length of gun. — From the same table it also appears, that the time of the ball's flight is nearly as the range; the gun and elevation being
الصفحة 367 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
الصفحة 376 - ... 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...
الصفحة 276 - The centre of gyration is that point in which, if all the matter contained in a 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.
الصفحة 85 - ... will be transmitted by means of the fixed pulley d, to the point b ; and as the point e, on which the weight acts, is equally distant...
الصفحة 8 - To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal and directed to contrary pans.
الصفحة 420 - ... is equal to that which a heavy body would acquire in falling through a space equal to the depth of the opening below the surface of the fluid, and is expressed as follows: v—i/lgh.
الصفحة 509 - ... part of the fathoms above found, and add them if the mean temperature be above 31°, but subtract them if the mean temperature be below 31°; and the sum or difference will be the true altitude in fathoms : or, being multiplied by 6, it will be the Altitude in feet. 392. Example 1. Let the state of the barometers and thermometers be as follows; to find the
الصفحة 8 - Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.

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