The Mechanical Principles of Engineering and ArchitectureJ. Wiley, 1875 - 699 стор. |
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Сторінка viii
... increase the vocabulary of scientific words , by assuming the obvious term " unit of work " to represent concisely and conveniently enough the idea which is attached to it . The work of any pressure operating through any space is ...
... increase the vocabulary of scientific words , by assuming the obvious term " unit of work " to represent concisely and conveniently enough the idea which is attached to it . The work of any pressure operating through any space is ...
Сторінка 42
... increasing velocity of motion . A RETARDING FORCE is that which acting upon a body in a direction opposite to that of its motion produces in it a continually diminishing velocity . An IMPULSIVE FORCE is that which having communicated ...
... increasing velocity of motion . A RETARDING FORCE is that which acting upon a body in a direction opposite to that of its motion produces in it a continually diminishing velocity . An IMPULSIVE FORCE is that which having communicated ...
Сторінка 52
... increase its distance from the centre S , or in a direction opposed to that of the force impelling it towards S. It is evident , nevertheless that the work would have been precisely the same , if instead of the body moving from P to A ...
... increase its distance from the centre S , or in a direction opposed to that of the force impelling it towards S. It is evident , nevertheless that the work would have been precisely the same , if instead of the body moving from P to A ...
Сторінка 63
... increases , the actual velocity V of the body con- tinually diminishes ; and when at length U , U ,, that is when the whole work done ( above the resistances ) in a direction opposite to the motion , comes to equal that done , before ...
... increases , the actual velocity V of the body con- tinually diminishes ; and when at length U , U ,, that is when the whole work done ( above the resistances ) in a direction opposite to the motion , comes to equal that done , before ...
Сторінка 66
... increases during the motion , so that a2 is greater than a ,, whilst in the latter case it diminishes , so that a is less than a ,. 76. If during one part of the motion , the work of the impressed forces tends to accelerate , and during ...
... increases during the motion , so that a2 is greater than a ,, whilst in the latter case it diminishes , so that a is less than a ,. 76. If during one part of the motion , the work of the impressed forces tends to accelerate , and during ...
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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