Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 pages |
From inside the book
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Page 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 15 ...
... 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 15 ...
Page 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 ...
Page 21
... units of work yielded in 3 minutes will equal 33,000 xxx 3 ; also the number of units of work re- quired to raise 13 cwts . from a depth of 140 fath . equals 13 x 112 x 140 x 6 . And since these two numbers are equal we have 33,000 x 3 ...
... units of work yielded in 3 minutes will equal 33,000 xxx 3 ; also the number of units of work re- quired to raise 13 cwts . from a depth of 140 fath . equals 13 x 112 x 140 x 6 . And since these two numbers are equal we have 33,000 x 3 ...
Page 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 ...
Page 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 ...
Common terms and phrases
ABCD 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 friction frustum given hence horizontal horse-power inclined inclined plane last Example length limiting angle magnitude mass middle point minute modulus moment of inertia motion moving number of units oscillation P₁ parallel forces passing perpendicular plane pressure principle principle of moments Prop pulley R₁ 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 vols wall weight wheel Woodcuts wrought iron
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