 | John Martin Frederick Wright - Astronomy - 1831 - 282 pages
...of the respective forces. 2. Find generally the conditions of equilibrium on the inclined plane. 3. What force must be exerted to sustain a ton weight...screw, the thread of which makes 150 turns in the course of 12 inches, and which is acted on by an arm 6 feet long ? 4. If P sustains W on an isosceles... | |
 | Alfred Wrigley - 1845 - 222 pages
...В and r the radii of the wheel and of the axle ; find the plane's inclination to the horizon. 122. What force must be exerted to sustain a ton weight...of 12 inches ; the length of the arm being 6 feet ? 123. Find the weight that can be sustained by a power of l Ib., acting at the distance of 3 yards... | |
 | Harvey Goodwin (bp. of Carlisle.) - Mathematics - 1847 - 136 pages
...passing over a tack in the same vertical plane; find the position of equilibrium. MECHANICAL POWERS. 1. What force must be exerted to sustain a ton weight on a screw, the thread of which makes 158 turns in the course of 12 inches, and which is acted on by an arm 6 feet long ? 2. In the annexed... | |
 | Harvey Goodwin (Bishop of Carlisle.) - 1851 - 414 pages
...planes, by means of a string which is parallel to the planes ; compare the pressures on the planes. 19. What force must be exerted to sustain a ton weight on a screw, the thread of which makes 100 turns in the course of 12 inches, and which is acted upon by an arm 4 feet long ? 20. Find the... | |
 | Dionysius Lardner - Astronomy - 1851 - 804 pages
...1,728 Ibs. press on an inclined plane, whose length is 55 feet and base 44 feet ? 30. What force mast be exerted to sustain a ton weight on a screw, the thread of which makes 150 revolutions in the height of 1 foot, the power being applied to a lever 6 feet long? (495.) 31. What... | |
 | Dionysius Lardner - Astronomy - 1854 - 762 pages
...Ibs. press on an inclined plane, whose length is 55 feet and base 44 feet ? 280 SO. What force rnust be exerted to sustain a ton weight on a screw, the thread of which makes }50 revolutions in the height of 1 foot, the power being applied to a lever 6 feet long? (495.) 31.... | |
 | Augustus William Smith - Mechanics, Analytic - 1855 - 340 pages
...will be seen that the ratio of P to W is independent of the radius of the cylinder. EXAMPLES. Ex. 1. What force must be exerted to sustain a ton weight...the thread of which makes 150 turns in the height of 1 foot, the length of the arm being 6 feet? BALANCES, ETC. of 1 Ib. acting at the distance of 3 yards... | |
 | Augustus William Smith - Mechanics, Analytic - 1855 - 368 pages
...will be seen that the ratio of P to W is independent of the radius of the cylinder. EXAMPLES. Ex. 1. What force must be exerted to sustain a ton weight...the thread of which makes 150 turns in the height of 1 foot, the length of the arm being 6 feet ? Ex. 2. Find the weight that can be sustained by a power... | |
 | Alfred Wrigley - 1857 - 332 pages
...support a weight of 1000Ib. on a screw; the distance between two contiguous threads being ^ inch ? 4. What force must be exerted to sustain a ton weight on a screw, the thread of which makes 150 turus in the height of 12 inches; the length of the arm being 6 feet ? 5. If the thread of the screw... | |
 | Dionysius Lardner - Astronomy - 1859 - 792 pages
...will a weight of 1,728 Ibs. press on an inclined plane, whose length is 55 feet and base 44 feet ? 30. What force must be exerted to sustain a. ton weight on a screw, the thread of which makes 150 revolutions in the height of 1 foot, the power being applied to a lever 6 feet long? (495.) 31. What... | |
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Ex. 1. What force must be exerted to sustain a ton weight on a screw, the thread of which makes 150 turns in the height of 1 foot, the length of the arm being 6 feet ? Ex. 
