The Mechanical Principles of Engineering and ArchitectureJ. Wiley, 1875 - 699 стор. |
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Сторінка xii
... weight of the machine . * This relation points out the existence of a particular direction in which the driving pressure should be applied to any such machine , that the amount of work expended upon the friction of the axis may be the ...
... weight of the machine . * This relation points out the existence of a particular direction in which the driving pressure should be applied to any such machine , that the amount of work expended upon the friction of the axis may be the ...
Сторінка 2
... weight of 22-815 cubic inches of distilled water . This weight is one pound troy ; being divided into 5760 equal parts , the weight of each is a grain troy , and 7000 such grains constitute the pound avoirdupois . If straight lines be ...
... weight of 22-815 cubic inches of distilled water . This weight is one pound troy ; being divided into 5760 equal parts , the weight of each is a grain troy , and 7000 such grains constitute the pound avoirdupois . If straight lines be ...
Сторінка 20
... weights of any number of different bodies or different parts of the same body , constitute a system of parallel pres- sures ; the direction , therefore , through this system of the resultant weight may be determined by the preceding pro ...
... weights of any number of different bodies or different parts of the same body , constitute a system of parallel pres- sures ; the direction , therefore , through this system of the resultant weight may be determined by the preceding pro ...
Сторінка 21
... weights of the parts of the body would produce , singly , the same effect as it regards the conditions of the equilibrium of the body , that the weights of its parts actually do collectively , and this weight is equal to the sum of the ...
... weights of the parts of the body would produce , singly , the same effect as it regards the conditions of the equilibrium of the body , that the weights of its parts actually do collectively , and this weight is equal to the sum of the ...
Сторінка 22
... weights P , and P , to o be collected in G ,, and find as before the com- mon centre of gravity G , of this weight P + P , so collected in G ,, and the third weight P ,. It is evident that this point G , is the centre of gravity ...
... weights P , and P , to o be collected in G ,, and find as before the com- mon centre of gravity G , of this weight P + P , so collected in G ,, and the third weight P ,. It is evident that this point G , is the centre of gravity ...
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Загальні терміни та фрази
a₁ angle of resistance angular velocity axes axis beam body bordering upon motion centre of gravity circumference co-efficient compression conical surfaces corresponding crank crank arm cubic foot curve cylinder deflexion determined displaced fluid distance ditto driven wheel driving epicycloidal equal equation equilibrium evident exceedingly small extrados forces formula friction given horizontal hypocycloidal inclination inertia intersect involute lamina length limiting angle line of centres line of resistance load machine modulus moment of inertia moving n₁ n₂ neutral line observing obtain oscillation P₁ P₂ parallel passing perpendicular pitch circle plane point of application point of contact portion position radius repre respect resultant revolution revolve rupture space stability Substituting supposed surfaces of contact taken to represent tion tooth U₁ unguent vertical vis viva viva voussoirs wall weight whence it follows whilst whole