Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 страници |
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Страница 7
... positions , as shown by the dotted lines ; it is required to determine the length of c E , that the point E may remain unmoved by the expansion or contraction of the bar . The length of A B is 10 ft . and the distance △ C is 1.725 in ...
... positions , as shown by the dotted lines ; it is required to determine the length of c E , that the point E may remain unmoved by the expansion or contraction of the bar . The length of A B is 10 ft . and the distance △ C is 1.725 in ...
Страница 10
... a strain of 3 tons ? Ans . 13 . The walls of Armagh Cathedral were restored to a vertical position by this process . Daniell's Chemistry , p . 103 . Ex . 52. — What is the length of a 12 PRACTICAL MECHANICS . Tenacity.
... a strain of 3 tons ? Ans . 13 . The walls of Armagh Cathedral were restored to a vertical position by this process . Daniell's Chemistry , p . 103 . Ex . 52. — What is the length of a 12 PRACTICAL MECHANICS . Tenacity.
Страница 12
... put together to sustain a strain of 3 tons ? Ans . 13 . * The walls of Armagh Cathedral were restored to a vertical position by this process . Daniell's Chemistry , p . 103 . Ex . 52. - What is the length of a 12 PRACTICAL MECHANICS .
... put together to sustain a strain of 3 tons ? Ans . 13 . * The walls of Armagh Cathedral were restored to a vertical position by this process . Daniell's Chemistry , p . 103 . Ex . 52. - What is the length of a 12 PRACTICAL MECHANICS .
Страница 54
... position on two points each 3 inches within the ends ( and therefore 29 feet apart ) , find the pressure on each point of sup- port . Ans . 7383 lbs . Ex . 175. - If in the last Ex . another mass of granite with the same section and ...
... position on two points each 3 inches within the ends ( and therefore 29 feet apart ) , find the pressure on each point of sup- port . Ans . 7383 lbs . Ex . 175. - If in the last Ex . another mass of granite with the same section and ...
Страница 59
... position that the angle D A K is 57 ° ; determine the direction and amount of the pressure on the point a , and the tension of the rope . [ Through G , the centre of gravity of the block , draw the FIG . 20 . P D E C A F B FIG . 21 . с ...
... position that the angle D A K is 57 ° ; determine the direction and amount of the pressure on the point a , and the tension of the rope . [ Through G , the centre of gravity of the block , draw the FIG . 20 . P D E C A F B FIG . 21 . с ...
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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