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Llibres Llibres 1 - 10 de 24 sobre A beam, 30 feet long, balances itself on a point at one-third of its length from....
" A beam, 30 feet long, balances itself on a point at one-third of its length from the thicker end ; but when a weight of 10 Ibs. is suspended from the smaller end, the prop must be moved 2 feet towards it, in order to maintain the equilibrium. "
A collection of examples in pure and mixed mathematics, with hints and ... - Pągina 167
per Alfred Wrigley - 1852
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New series of The mathematical repository, Volum 5

Thomas Leybourn - 1830
...sphere of mercury of the same magnitude.. 8. A beam 30 feet long, balances itself upon a point at jrd of its length from the thicker end. But when a weight of lolbs. is suspended at the other end, the prop must be moved two feet towards it to maintain the equilibrium....
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Mathematical problems and examples, arranged according to subjects, from the ...

1836
...proportion of the friction to the pressure. 2. A beam 30 feet long, balances itself upon a point at |rd of its length from the thicker end. But when . a weight of 10 Ibs. is suspended at the other end, the prop must be moved two feet towards it to maintain the equilibrium. What is the...
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An Elementary Treatise on Mechanics: For the Use of Junior University Students

Richard Potter - 1846 - 172 pągines
...diminished. EXAMPLES ON CHAPTERS VI. VII. AND VIII. . 1 . A lever 30 feet long balances itself upon a prop of its length from the thicker end; but when a weight of 10 pounds is suspended at the other end, the prop must be moved 2 feet towards it, to maintain the equilibrium;...
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A collection of problems and examples adapted to the 'Elementary course of ...

Harvey Goodwin (bp. of Carlisle.) - 1847 - 80 pągines
...of 110 Ibs. at the other. Find the weight of the beam. 17. A beam 30 feet long balances itself upon a point at one-third of its length from the thicker end. But when a weight of 10 Ibs. is suspended at the other end, the prop must be moved two feet towards it to maintain equilibrium. What is the weight...
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Elementary mechanics

Harvey Goodwin (bp. of Carlisle.) - 1851
...given force; required the position of this latter fulcrum. V. A beam, 30 feet long, balances about a point at one-third of its length from the thicker end ; but when a weight of lOlbs. is suspended from the smaller end, the fulcrum must be moved 2 feet towards it in order to maintain...
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A collection of problems and examples, adapted to the "Elementary course of ...

Harvey Goodwin - 1851 - 173 pągines
...about a fulcrum at a distance of b inches from the other end. 14. A beam, 30 feet long, balances about a point at onethird of its length from the thicker end ; but when a weigh! of 10 Ibs. is suspended from the smaller end, the fulcrum must be moved 2 feet towards it in...
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Report of the board of education [continued as] Report of the director of ...

Bombay presidency, board of educ - 1851
...relation of the forces to each other. 12. A beam 30 feet long balances upon a prop 10 feet from one end ; but when a weight of 10 Ibs. is suspended from the thin end the prop has to be moved 2 feet to preserve the equilibrium ; required the weight of the beam....
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An Elementary Treatise on Mechanics: Embracing the Theory of Statics and ...

Augustus William Smith - 1855 - 307 pągines
...„ . 208. EXAMPLES ON CHAPTERS VI., VII., AND VIII. Ex. 1. A beam 30 feet long balances on a prop ^ of its length from the thicker end ; but when a weight of 10 Ibs. is suspended from the other end, the prop must be moved 2 feet toward it to maintain the equilibrium. Required the weight...
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AN ELEMENTARY TREATISE ON MECHANICS

AUGUSTUS W. SMITH - 1855
...— . 208. EXAMPLES ON CHAPTERS vI., VII., AND vIII. Ex. 1. A beam 30 feet long balances on a prop -| of its length from the thicker end ; but when a weight of 10 Ibs. is suspended from the other end, the prop must be moved 2 feet toward it to maintain the equilibrium. Required the weight...
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Manual of mechanics, by J.A. Galbraith and S. Haughton

Joseph Allen Galbraith - 1860
...point will it balance ? Ans. The centre of the bar is 5 in. distant from the fulcrum. 20. A beam 30 ft. long balances itself on a point at one-third of its...length from the thicker end; but when a weight of u:> Ibs. is suspended from the smaller end, the prop must be moved two feet towards it, in order to...
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