Mechanics for beginnersMacmillan and Company, 1867 - Всего страниц: 367 |
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Часто встречающиеся слова и выражения
ABCD acceleration algebraical sum angular points axis balance beam bisects body or system centre of gravity circle coefficient of friction components conditions of equilibrium cos² couple cylinder denote described determine distance equi Euclid example feet find the centre fixed point fulcrum given heavy particles Hence horizontal plane impact inches inclined plane Law of Motion length line of action lower block magnitude and direction mechanical advantage middle point move moveable Pully P+Q+R parabola Parallelogram of Forces perpendicular point of application point of projection position Power preceding Article pressure proposition radius ratio Resolved displacement respectively rest right angles rigid body Screw shew single resultant smooth string which passes system of forces System of Pullies Take moments round tension three forces tion triangle turn round uniform vanishes velocity vertical weight Wheel and Axle
Популярные отрывки
Стр. 327 - The squares of the periodic times are proportional to the cubes of the major axes of the orbits.
Стр. 295 - Change of motion is proportional to the impressed force, and takes place in the direction of the straight line in which the force acts.
Стр. 295 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Стр. 10 - ... is represented in magnitude and direction by that diagonal of the parallelogram which passes through the particle.
Стр. 237 - ... point, then the resultant velocity will be represented in magnitude and direction by the diagonal, drawn from that point, of the parallelogram constructed on the two straight lines as adjacent sides.
Стр. 134 - This proportion teaches us that, when in equilibrium, the power is to the weight as the height of the plane is to its length.
Стр. 96 - The straight lines which join the middle points of the opposite sides of any quadrilateral bisect each other...
Стр. 16 - If three forces acting on a particle keep it in equilibrium, each force is proportional to the sine of the angle between the directions of the other two.
Стр. 13 - Then it is obvious that the particle will be in equilibrium; for there is no reason why it should move in one direction rather than in another.
Стр. 290 - A ball is projected in a given direction within a fixed horizontal hoop, so as to go on rebounding from the surface of the hoop ; find the limit to which the velocity will approach, and shew that it attains this limit in a finite time, e being less than 1.