Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 страници |
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Страница 3
... drawn into wire meter ; what length of wire is made ? 1097. 78. 6d . of an inch in dia- Ans . 46,936 ft . Ex . 21. - It is said that gold can be drawn into wire one millionth part of an inch thick ; what will be the length of such a ...
... drawn into wire meter ; what length of wire is made ? 1097. 78. 6d . of an inch in dia- Ans . 46,936 ft . Ex . 21. - It is said that gold can be drawn into wire one millionth part of an inch thick ; what will be the length of such a ...
Страница 10
... draw the walls together ; the process being continued until the walls become vertical . * If we suppose the rods to be 50 ft . long and 3 square inches in section , and to be fastened 15 ft . above the joint of the masonry , round which ...
... draw the walls together ; the process being continued until the walls become vertical . * If we suppose the rods to be 50 ft . long and 3 square inches in section , and to be fastened 15 ft . above the joint of the masonry , round which ...
Страница 12
... draw the walls together ; the process being continued until the walls become vertical . * If we suppose the rods to be 50 ft . long and 3 square inches in section , and to be fastened 15 ft . above the joint of the masonry , round which ...
... draw the walls together ; the process being continued until the walls become vertical . * If we suppose the rods to be 50 ft . long and 3 square inches in section , and to be fastened 15 ft . above the joint of the masonry , round which ...
Страница 21
... draws a gross load of 60 tons at the rate of 20 miles an hour ; the resistances are at the rate of 8 lbs . per ton ... draw at the rate of 25 miles an hour , resistances being 8 lbs . per ton ? Ans . 46.875 tons . Ex . 86. - A train ...
... draws a gross load of 60 tons at the rate of 20 miles an hour ; the resistances are at the rate of 8 lbs . per ton ... draw at the rate of 25 miles an hour , resistances being 8 lbs . per ton ? Ans . 46.875 tons . Ex . 86. - A train ...
Страница 22
... draws a train at the rate of 30 miles an hour ; the resistances being 7 lbs . per ton , what is the gross weight of ... drawn along a railway at the rate of 20 miles an hour ; the resistances being 8 lbs . per ton , find the horse- power ...
... draws a train at the rate of 30 miles an hour ; the resistances being 7 lbs . per ton , what is the gross weight of ... drawn along a railway at the rate of 20 miles an hour ; the resistances being 8 lbs . per ton , find the horse- power ...
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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