An Elementary Treatise on Mechanics, Embracing the Theory of Statics and Dynamics, and Its Application to Solids and FluidsHarper & Brothers, 1863 |
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Altres edicions - Mostra-ho tot
An Elementary Treatise on Mechanics, embracing the theory of statics and ... Augustus W. SMITH Visualització completa - 1849 |
An Elementary Treatise on Mechanics, Embracing the Theory of Statics and ... Augustus William Smith Visualització completa - 1868 |
Frases i termes més freqüents
accelerating force action angular velocity applied apsis axes axis axle beam body is projected body moves center of gravity centrifugal force circle circumference co-ordinates component concurring forces conditions of equilibrium constant force cord couple curve density descend determine displaced fluid distance earth elastic equal and opposite equation feet fixed point fluid force of gravity forces acting friction fulcrum given Hence horizontal impact inclined plane inertia length lever magnitude mass modulus of elasticity moment of inertia motion opposite directions orbit P₁ P₂ parallel forces particle perpendicular point of application polygon position pressure principle of virtual PROP pulley radius radius of gyration ratio reaction represent Resolving respectively resultant SCHOL sides space described square substituted surface tension tion triangle uniform v₁ versin vertical line vibration weight wheel
Passatges populars
Pàgina 227 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Pàgina 177 - ... the squares of the periodic times are as the cubes of the distances from the common centre, the centripetal forces will be inversely as the squares of the distances.
Pàgina 263 - The specific gravity of a body is the ratio of the weight of the body to the weight of an equal volume of some other body taken as the standard of comparison, and whose specific gravity, therefore, is taken as the unit.
Pàgina 184 - TT is constant, or, the time of vibration of a pendulum varies directly as the square root of the length, and inversely as the square root of the accelerating force.
Pàgina 141 - COR. The interval between two successive conjurations is 239. EXAMPLES. Ex. 1. If an iron rod have one end against the sun and the other resting on the earth, the distance of the sun from the earth being 95,125,000 miles, in what time will a blow applied to the end on the earth be felt by the sun, the velocity of an impulse in iron being 11,865 feet per second ? Ans. 490 days. Ex. 2. When the earth is in that part of its orbit nearest to Jupiter, an eclipse of one of Jupiter's satellites is seen...
Pàgina 13 - ... components. By compounding the resultant R with a third force, we should obtain a like result. In the same manner, the proposition may be extended to any number of forces. 33. COR. 2. If the origin of moments be a fixed point, and taken in the direction of the resultant, On will become zero, and...
Pàgina 192 - S.?ftr2 is the moment of inertia of the body about that line. The definition given above is to be regarded as a verbal enunciation of this analytical expression, which has required nomenclature by the frequency of its occurrence in dynamical investigations. 317. PROP. The moment of inertia of a body about any fixed axis exceeds its moment of inertia about a parallel axis passing the center of gravity, by the product of the mass into the square of the distance between the axes. Let m be a particle...
Pàgina 171 - O, and, therefore, the time down it will be greater than the time down PB, which is therefore the line of quickest descent to the circumference of C. 281. PROP. To find the straight line of quickest descent from a given point to a given inclined plane. Let A be the given point, AG a vertical line passing through this point, and AB a perpendicular to the inclined plane BG. The line AC, bisecting the angle BAG, will be the line required.
Pàgina 227 - Kepler's laws, the areas described by the radius vector are proportional to the times, and when this is the case, by Art.
Pàgina 9 - 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.