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الكتب الكتب 61 - 70 من 103 فيThere is an equilibrium upon the wheel and axle when the power is to the weight as....
" There is an equilibrium upon the wheel and axle when the power is to the weight as the radius of the axle to the radius of the wheel. "
The Civil-engineer & Surveyor's Manual: Comprising Surveying, Engineering ... - الصفحة 4
بواسطة Michael McDermott - 1879 - عدد الصفحات: 586
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Manual of Mechanics

Samuel Haughton - 1866 - عدد الصفحات: 182
...since the circumferences of circles are proportional to their radii, The power is to the resistance as the radius of the axle is to the radius of the wfteel. — «. ED The wheel and axle is sometimes modified, as shown in the following figure. In this...
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Mechanics for Beginners with Numerous Examples

Isaac Todhunter - 1867 - عدد الصفحات: 350
...machine round the axis in opposite directions. 182. When there is equilibrium on the Wheel and Axle, the Power is to the Weight as the radius of the Axle is to the radius of the Wheel. It may be assumed, that the effects of the Power and the Weight will not be altered if we suppose them...
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Mechanics Required for the Additional Subjects for Honours ... and for the ...

James L. McDowell - 1867 - عدد الصفحات: 102
...radius of axle W OA radius of wheel• Hence, when there is equilibrium on the wheel and axle, P is to W as the radius of the axle is to the radius of the wheel. The converse is manifestly true, namely, TfPbe to W as the radius of the axle to the radius of the...
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Natural Philosophy: For Common and High Schools

Le Roy Clark Cooley - 1871 - عدد الصفحات: 196
...fulcrum. For the wheel and axle the law of equilibrium states, that the power and weight will be in equilibrium when the power is to the weight as the radius of the axle is to the radius of the wheel. For the movable pulley with a single rope the law states, that the power and weight will balance each...
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An elementary treatise on statics

J W. Mulcaster - 1871
...wheel, CN=r=radius of axle. Therefore, taking moments about C, PxR=Wxr; .-. ^=J; .-. there will be equilibrium when the power is to the weight as the radius of the axle is to the radius of the wheel. When the thickness of the rope is considerable, it must he taken into account; we shall then have P...
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An Introduction to Natural Philosophy: Designed as a Text-book for the Use ...

Denison Olmsted - 1871 - عدد الصفحات: 437
...distance, (,' D or CB, the same as before. In general, the law of equilibrium for this machine is, The power is to the weight as the radius of the axle to the radius of the wheel. If the rope on the wheel, being fastened at A (Fig. 87) is drawn by the...
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Natural philosophy. Mechanics, الجزء 1

J. Alfred Skertchly - 1873 - عدد الصفحات: 168
...acts at B, the extremity of the shorter arm B F. Consequently, P : W : : AF : B F. In other words, the power is to the weight as the radius of the axle is to the radius of the wheel. Virtual Velocity.— It is easy to perceive that the power descends in one revolution of the wheel...
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An Elementary Treatise on Mechanics: For the Use of the Junior Classes at ...

S. Parkinson - 1874 - عدد الصفحات: 398
...and there will be equilibrium if P. MO = W. NO, P NO or W = Wn' 1, e , ^ t^ e P ower i 8 *° tf* e weight as the radius of the axle is to the radius of the wheel. 101. Obs. If the thickness of the ropes cannot be neglected, we must suppose the action of P and W...
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A Practical Business Arithmetic ...

Lorenzo Fairbanks - 1875
...wound about a cylinder or roller, moved by a crank, shifting levers, or similar means. -PRINCIPLE. — The power is to the weight as the radius of the axle is to the radius of the wheel. EXAMPLES. 1. The diameter of a wheel is 4 feet, and of its axle 8 inches : what power applied to the...
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The Science and Art of Teaching: Or, The Principles and Practice of Education

George Victor Le Vaux - 1875 - عدد الصفحات: 307
...multiplied by 2 multiplied by 3.1416: — Thus, P : W: : Diff. : U 2x3.1416. The Endless Screw. — The power is to the weight as the radius of the axle is to the product of the number of teeth in wheel, multiplied by the length of the winch : — Thus, P : W :...
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