The elements of dynamics, mechanics |
Outras edições - Ver todos
Termos e frases comuns
average velocity body starts Boyle's Law brium centre of gravity change of velocity component velocities cubic centimetres cubic foot cubic inches cylinder Define density direction of motion distance equal and opposite equation equili equilibrium Euclid Examination on Sections Examples for Exercise feet per second figure Find its velocity find the centre Find the resultant Find the specific Find the velocity fluid fulcrum inclined plane initial velocity instant kinetic energy law of motion lever liquid magnitude and direction mass mercury miles an hour momentum opposite directions parallel forces acting parallelogram parallelogram of forces particle piston point of application pounds Prove pulleys resultant velocity right angles scholium sides space passed specific gravity square inch statical friction straight line string surface taken in order tension three forces triangle taken uniform acceleration uniform velocity unit v₁ v₂ vertically upwards vessel volume weighing 1 lb weight
Passagens mais conhecidas
Página 35 - 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.
Página 38 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Página 51 - If any number of forces, acting on a particle, be represented, in magnitude and direction, by the sides of a polygon, taken in order, the forces shall be in equilibrium.
Página 45 - Work done on any system of bodies has its equivalent in the form of work done against friction, molecular forces, or gravity, if there be no acceleration ; but, if there be acceleration, part of the work is expended in overcoming resistance to acceleration, and the additional kinetic energy developed is equivalent to the work so spent.
Página 135 - A balloon is carried along by a current of air moving from east to west at the rate of 60 miles an hour, having no motion of its own through the air, and a feather is dropped from the balloon. What sort of a path will it appear to describe, as seen by a man in the balloon?— (Matric., June 1874.) CHAPTER II.
Página 12 - If three forces, acting at a point, can be represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium.
Página 71 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.
Página 67 - The moment of a force about a point is the product of the force and the perpendicular distance from the line of action of the force to the point.
Página 33 - The work done by a force acting obliquely on a mooing body is measured by the product of the force and the distance through which the body moves in the direction of the force.
Página 37 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.