The Mechanical Principles of Engineering and ArchitectureJ. Wiley, 1875 - 699 стор. |
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Сторінка 18
... position . in the point L. Through the points P , P. , and R ,, draw P , M ,, P , M ,, and R , N , perpendicularly to this plane : these lines will be in the same plane with one another and with P , L ; let the intersection of this last ...
... position . in the point L. Through the points P , P. , and R ,, draw P , M ,, P , M ,, and R , N , perpendicularly to this plane : these lines will be in the same plane with one another and with P , L ; let the intersection of this last ...
Сторінка 19
... position in space will then be known . Thus then we shall know a point through which the resultant of all the pressures passes , also the direction of that resultant , for it is parallel to the common direction of all the pressures ...
... position in space will then be known . Thus then we shall know a point through which the resultant of all the pressures passes , also the direction of that resultant , for it is parallel to the common direction of all the pressures ...
Сторінка 20
... position it may be turned . For the effect of turning it into different positions is to cause the directions of the weights of its parts to traverse the heavy body or system in different directions , at one time lengthwise for instance ...
... position it may be turned . For the effect of turning it into different positions is to cause the directions of the weights of its parts to traverse the heavy body or system in different directions , at one time lengthwise for instance ...
Сторінка 21
... position in the body , whatever may be the position into which the body is turned ; or in other words , that the resultant of the weights of its parts passes always through the same point in the body or system in whatever position it ...
... position in the body , whatever may be the position into which the body is turned ; or in other words , that the resultant of the weights of its parts passes always through the same point in the body or system in whatever position it ...
Сторінка 22
... position of G is known . 23. It is required to determine the centre of gravity of three weights P1 , P2 , P3 , not ... position it may be turned , and so of R3 , R4 . . . . . and R - 1 . is , in every position of the body , the resultant ...
... position of G is known . 23. It is required to determine the centre of gravity of three weights P1 , P2 , P3 , not ... position it may be turned , and so of R3 , R4 . . . . . and R - 1 . is , in every position of the body , the resultant ...
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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