The Mechanical Principles of Engineering and ArchitectureJ. Wiley, 1875 - 699 стор. |
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Сторінка ix
... equal to the aggregate work of their vires inertiæ , it follows , by the principle of virtual velocities , that the differ- ence between the aggregate work of those forces impressed upon a machine , which tend to accelerate its motion ...
... equal to the aggregate work of their vires inertiæ , it follows , by the principle of virtual velocities , that the differ- ence between the aggregate work of those forces impressed upon a machine , which tend to accelerate its motion ...
Сторінка 2
... equal . If , instead of applying two pressures which are thus equal in opposite directions , we apply them both in the same direction , the single pressure which must be applied in a direction opposite to the two to sustain them , is ...
... equal . If , instead of applying two pressures which are thus equal in opposite directions , we apply them both in the same direction , the single pressure which must be applied in a direction opposite to the two to sustain them , is ...
Сторінка 4
... equal to P , and P , of which P , may be transferred without altering the conditions to C , and P , to E. Let this be done , and let P , be transferred from A to C , we ... equal 2 to one another . But if P , be equal 4 THE PARALLELOGRAM.
... equal to P , and P , of which P , may be transferred without altering the conditions to C , and P , to E. Let this be done , and let P , be transferred from A to C , we ... equal 2 to one another . But if P , be equal 4 THE PARALLELOGRAM.
Сторінка 5
... equal to P ,, AC is equal to AB ; so that in this particular case the direction of the resultant is the direction of the diagonal , and the proposition is true , and similarly it is true of P , and P ,, since these pressures are equal ...
... equal to P ,, AC is equal to AB ; so that in this particular case the direction of the resultant is the direction of the diagonal , and the proposition is true , and similarly it is true of P , and P ,, since these pressures are equal ...
Сторінка 7
... equal to the moment of that pressure which tends to turn it in the opposite direction . Let P. , P2 , P. , acting in the directions P , O , P , O , P , O , be any three pressures in equilibrium . Take any point A in the plane . in which ...
... equal to the moment of that pressure which tends to turn it in the opposite direction . Let P. , P2 , P. , acting in the directions P , O , P , O , P , O , be any three pressures in equilibrium . Take any point A in the plane . in which ...
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Загальні терміни та фрази
a₁ angle of resistance angular velocity axes axis beam body bordering upon motion centre of gravity circumference co-efficient compression conical surfaces corresponding crank crank arm cubic foot curve cylinder deflexion determined displaced fluid distance ditto driven wheel driving epicycloidal equal equation equilibrium evident exceedingly small extrados forces formula friction given horizontal hypocycloidal inclination inertia intersect involute lamina length limiting angle line of centres line of resistance load machine modulus moment of inertia moving n₁ n₂ neutral line observing obtain oscillation P₁ P₂ parallel passing perpendicular pitch circle plane point of application point of contact portion position radius repre respect resultant revolution revolve rupture space stability Substituting supposed surfaces of contact taken to represent tion tooth U₁ unguent vertical vis viva viva voussoirs wall weight whence it follows whilst whole