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الكتب الكتب 21 - 30 من 102 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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Elements of Natural Philosophy: With Questions for Review; Illustrated by ...

Francis Joseph Grund - 1836 - عدد الصفحات: 294
...the weight moves ; consequently, what is saved in power is lost in velocity. In the wheel and axle, the power is to the weight as the radius of the axle is to that of the wheel ; but just in the same proportion is the velocity of the weight attached to the axle...
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The Teacher's Assistant in the "Course of Mathematics Adapted to the Method ...

1836 - عدد الصفحات: 472
...produced, when the power acting at the circumference of the wheel is to the weight sustained upon the axle, as the radius of the axle is to the radius of the wheel. THE PULLEY. A pulley ¡sa small grooved wheel movable about a pivot, the pivot itself being at the...
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The mechanical Euclid, containing the elements of mechanics and hydrostatics

William Whewell - 1837
...motion for its axis, and called the Axle. * PROP. XVI. 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. Let AB be the wheel, and DEB the axle, the whole being moveable about the...
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The Cambridge course of elementary natural philosophy, being the ...

John Charles Snowball - 1838
...ARTS. 31. Definition of Wheel and Axle. 31. Prop. 10. 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. 32. Definition of Pulley. 32. Prop. 11. In the single moveable pulley where...
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A manual for mechanics' institutions

Society for the diffusion of useful knowledge - 1839
...the weight to the circumference of this cylinder, or of the axle ; and, when there is equilibrium, the power is to the weight as the radius of the axle to the radius of the wheel. This machine, which is a modification of the lever, furnishes a means of...
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The North American Arithmetic: For Advanced Scholars. part third, الجزء 3

Frederick Emerson - 1839 - عدد الصفحات: 288
...the power end of the lever, and the circumference of the axle, the end applied to the weight. Hence, the radius of the axle is to the radius of the wheel, as the power is to the weight: or, by a statement more frequently convenient — As the diameter of...
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A Practical Treatise on Arithmetic, [etc.].

George Leonard - 1841 - عدد الصفحات: 340
...is the distance of the power from the fulcrum. Therefore, to balance the weight, The power must be to the weight as the radius of the axle is to the radius of the wheel. When the power and weight balance each other, what must be done in order to move the weight ? Why ?...
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Arithmetical Spyglass and Teacher's Assistant: Intended as a Key and ...

1842 - عدد الصفحات: 166
...of the wheel, and the weight to that of the axis by means of cords. 2. PRINCIPLE. The power must be to the weight as the radius of the axle is to the radius of the wheel. AN INCLINED PLANE is a plane which makes an acute angle with the horizon. 3. PRINCIPLE. A power must...
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A Practical Treatise on Arithmetic: Wherein Every Principle Taught is ...

George Leonard - 1843
...is the distance of the power from the fulcrum. Therefore, to balance the weight, The power must be to the weight as the radius of the axle is to the radius of the wheel. When the power and weight balance each other, what must be done in order to move the weight ? Why ?...
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Elementary and Practical Arithmetic on the Inductive System, by Analysis and ...

Charles Waterhouse - 1844 - عدد الصفحات: 216
...the wheel, and the weight to that of the axis by means of cords. Principle 5.— The power must be to the weight as the radius of the axle is to the radius of the wheeL • . The SCREW is a spiral thread or groove, cut round a cylinder, and every where making the same...
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