Text-book of Mechanics: With Numerous ExamplesD. Van Nostrand Company, 1890 - 254 pages |
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Expressions et termes fréquents
accel acceleration action angle of friction axis axle beam Boyle's law called centre of gravity centrifugal force circle coefficient of friction components considered constant coördinates cross-section curve cylinder denote diameter displacement distance energy engine equal equation equilibrium external forces F₁ find the H. P. fluid foot-pounds force F force of gravity forces acting ft.-pounds given Hence horizontal impact indefinitely small inertia length lever liquid magnitude mass miles an hour moment of inertia motion moving orifice oscillation parallel parallelogram parallelogram of forces particle pass path pendulum perpendicular pipe piston plane position poundals pressure pulley radius reaction represent resistance resolved rest resultant revolutions per minute rigid body rotation scale straight line stress Suppose surface tangent tion tons uniform unit vertical weight wheel
Fréquemment cités
Page 169 - The total energy of any body or system of bodies is a quantity which can neither be increased nor diminished by any mutual action of such bodies, though it may be transformed into any one of the forms of which energy is susceptible.
Page 33 - 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.
Page 127 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Page 189 - Show that the moment of inertia of a body about any axis is equal to the moment of inertia about a parallel axis through the...
Page 55 - Lami's Theorem. If three forces acting on a particle keep it in equilibrium, each is proportional to the sine of the angle between the other two.
Page 168 - I suppose it is one of your big engines." " But what drives the engine ?" " Oh, very likely a canny Newcastle driver ! " " What do you say to the light of the sun ? " " How can that be ?" asked the doctor.
Page 168 - What do you say to the light of the sun?' — 'How can that be?' asked the doctor. — ' It is nothing else,' said the engineer : ' it ia light bottled up in the earth for tens of thousands of years, — light, absorbed by plants and vegetables, being necessary for the condensation of carbon during the process of their growth, if it be not carbon in another form...
Page 168 - What do you say to the light of the sun ? ' ' How can that be ? ' asked the doctor. ' It is nothing else,' said the engineer : ' it is light bottled up in the earth for tens of thousands of years, — light, absorbed by plants and vegetables, being necessary for the condensation of carbon during the process of their growth, if it be not carbon in another form, — and now, after being buried in the earth for long ages in the fields of coal, that latent light is again brought forth and liberated,...
Page 192 - ... pendulum is the same as that of a simple pendulum of length l and swinging about C.
Page 98 - In other words, the moment of the resultant about any point is equal to the algebraical sum of the moments of the forces about the same point.