Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 страници |
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Страница 4
... last example had an additional 2 ft . of foun- dation 3 bricks thick , and were supported by 20 square buttresses ... last two examples at 5s . 6d . per thousand ? Ans . 491. 15s . Ex . 29. The following are the actual dimensions of the ...
... last example had an additional 2 ft . of foun- dation 3 bricks thick , and were supported by 20 square buttresses ... last two examples at 5s . 6d . per thousand ? Ans . 491. 15s . Ex . 29. The following are the actual dimensions of the ...
Страница 9
... last example if the wall had been of Portland stone and 14 ft . thick , what would have been the pressure per square inch , and the degree of compression ? Ans . ( 1 ) 248.9 lbs . ( 2 ) in . Ex . 46. In the last example if the oak ...
... last example if the wall had been of Portland stone and 14 ft . thick , what would have been the pressure per square inch , and the degree of compression ? Ans . ( 1 ) 248.9 lbs . ( 2 ) in . Ex . 46. In the last example if the oak ...
Страница 15
... examples the working stress is assumed to beth of the ultimate strength : - Ex . 62. - A wall of brickwork 3 ft . thick ... last example the columns had been of brickwork 2 ft . thick , to what height would the work then be carried ? Ex ...
... examples the working stress is assumed to beth of the ultimate strength : - Ex . 62. - A wall of brickwork 3 ft . thick ... last example the columns had been of brickwork 2 ft . thick , to what height would the work then be carried ? Ex ...
Страница 22
Illustrated by Numerous Examples bart John Francis Twisden (Sir). Ex . 87. - An engine working with the same power as that in the last example draws a train at the rate of 30 miles an hour ; the resistances being 7 lbs . per ton , what ...
Illustrated by Numerous Examples bart John Francis Twisden (Sir). Ex . 87. - An engine working with the same power as that in the last example draws a train at the rate of 30 miles an hour ; the resistances being 7 lbs . per ton , what ...
Страница 24
... last example had raised 55 cubic feet of water per minute from a depth of 250 fathoms , what would have been its modulus ? Ans . 0.7771 . Ex . 97. - How many strokes per minute must the engine in Ex . 95 make in order to raise 15 cubic ...
... last example had raised 55 cubic feet of water per minute from a depth of 250 fathoms , what would have been its modulus ? Ans . 0.7771 . Ex . 97. - How many strokes per minute must the engine in Ex . 95 make in order to raise 15 cubic ...
Често срещани думи и фрази
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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