An Elementary Treatise on Mechanics: Designed as a Text-book for the University Examinations for the Ordinary Degree of B.A.Maclear & Company, 1858 - 92 من الصفحات |
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acceleration acting vertically algebraic sum angle arithmetic mean asserts that PX axis balls block body centre of gravity centre of parallel change of velocity circumference conditions of equilibrium cylinder distance equal and opposite fixed point forces acting freely friction ft² fulcrum geometrical given HARVARD COLLEGE Hence horizontal impinge inch inclined plane initial point interval LAW OF MOTION lever machine magnitude and direction mass material particle mechanical advantage moments moveable pullies negative nitude opposite direction parallel forces parallelogram particle moved uniformly perpendicular Polygon position principle radius ratio rection represent in magnitude resolved retarded rigid body rigid system rigidly connected screw set of Forces sides similar triangles smooth straight line supporting a weight supposed system of pullies threads tion uniform Forces velocity acquired velocity after impact virtual velocity weight supported Wheel and Axle whole number
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الصفحة 16 - 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 will be in equilibrium.
الصفحة 10 - If two forces acting at a point be represented in magnitude and direction by two straight lines drawn from that point, and if a parallelogram be constructed having these two lines for adjacent sides, then that diagonal of the parallelogram which passes through the point of application of the forces will represent their resultant in magnitude and direction.
الصفحة 68 - MB 1871. 36. A body is projected up an inclined plane with given velocity. Show that the space described in any time is equal to that which would be described in the same time with a uniform velocity equal to half the sum of the velocities at the beginning and end of the time. Hence find the space described on a plane inclined at 30° to the horizon while the velocity changes from 48 to 16 ft. per see.
الصفحة 12 - ... one of them is equal and opposite to the resultant of the other two.
الصفحة 23 - couple about any point in the plane of the couple is equal to the algebraic sum of the moments of the two forces composing the couple about the same point.
الصفحة 24 - The bending moment at any Imaginary transverse section of a beam Is equal to the algebraic sum of the moments of all the forces to either side of the section. bending of strata (Geol.).
الصفحة 21 - The moment of the resultant force, or resultant couple, of any system of coplanar forces about any point in their plane is equal to the algebraic sum of the separate moments of the forces composing the system about the same point.
الصفحة 20 - ... to any point in the plane of the forces, is equal to the sum...
الصفحة 77 - ... g is the same for all bodies at the same place on the earth's surface.