Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 páginas |
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Página 19
... units must be done when the force of p lbs . is exerted through s ft . Ex . 71. - How many units of work are expended in raising 2 cwts . through 30 fathoms ? Ans . 40,320 . Ex . 72. The mean pressure on the piston of a steam engine is ...
... units must be done when the force of p lbs . is exerted through s ft . Ex . 71. - How many units of work are expended in raising 2 cwts . through 30 fathoms ? Ans . 40,320 . Ex . 72. The mean pressure on the piston of a steam engine is ...
Página 20
... units of work per minute . The con- > clusion , as far as regards the efficiency of the animal , is not very correct ... number of units of work is done by the steam per minute , and what is the horse - power of the engine ? Ans ...
... units of work per minute . The con- > clusion , as far as regards the efficiency of the animal , is not very correct ... number of units of work is done by the steam per minute , and what is the horse - power of the engine ? Ans ...
Página 21
... units of work yielded in 3 minutes will equal 33,000 × ≈ × 3 ; also the number of units of work re- quired to raise 13 cwts . from a depth of 140 fath . equals 13 x 112 × 140 × 6 . And since these two numbers are equal we have 33,000 ...
... units of work yielded in 3 minutes will equal 33,000 × ≈ × 3 ; also the number of units of work re- quired to raise 13 cwts . from a depth of 140 fath . equals 13 x 112 × 140 × 6 . And since these two numbers are equal we have 33,000 ...
Página 23
... number of units of work done by the agent is represented by U , the number expended in overcoming prejudicial resistances by U。, and the number expended usefully by U1 , all in the same given time , then it admits of proof in the case ...
... number of units of work done by the agent is represented by U , the number expended in overcoming prejudicial resistances by U。, and the number expended usefully by U1 , all in the same given time , then it admits of proof in the case ...
Página 24
... number of units of work done by steam on piston in one hour equals π × 302 × 8 × 15 × 11 × 60 ; this number multiplied by 0.65 will give the number of units usefully spent in raising water ; hence the number of cubic feet of water is ...
... number of units of work done by steam on piston in one hour equals π × 302 × 8 × 15 × 11 × 60 ; this number multiplied by 0.65 will give the number of units usefully spent in raising water ; hence the number of cubic feet of water is ...
Términos y frases comunes
accelerative effect angle of resistance angular angular velocity axis axle beam body brickwork cast iron centre of gravity circle circumference coefficient of friction Crown 8vo cubic foot curve cylinder described determine the number diameter direction distance draw Edition engine epicycloid equal equation equilibrium expended extrados forces acting formula given hence horizontal horse-power inclined inclined plane last Example length limiting angle line of resistance mass middle point minute moment of inertia motion moving number of feet number of units oscillation P₁ parallel forces perpendicular plane pressure principle of moments Prop pulley radius raised reaction represent respectively rest resultant right angles rope round screw sliding space square inch steam suppose surface teeth thick thread tion triangle vertical virtual velocities vols wall weight wheel Woodcuts wrought iron
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