 | John Francis Twisden - 1860 - 380 pages
...is expended in filling or emptying the box. Ans. (1) 18 tons. (2) 39| tons. Ex. 143. — If 4 cwt. of material are drawn from a depth of 80 fathoms by a rop« 5 in. in circumference ; how many units of work are expended in raising it, and what horse power... | |
 | John Francis Twisden - 1863 - 412 pages
...is expended in filling or emptying the box. Ans. (1) 18J tons. (2) 39| tons. Ex. 1i3. — If 4 cwt. of material are drawn from a depth of 80 fathoms by a rope 5 in. in circumference ; how many units of work are expended in raising it, and what horse-power is... | |
 | John Francis Twisden - 1863 - 390 pages
...is expended in filling or emptying the box. Ans. (1) 18J tons. (2) 39| tons. Ex. 143. — If 4 cwt. of material are drawn from a depth of 80 fathoms by a rope 5 in. in circumference ; how many units of work are expended in raising it, and what horse-power is... | |
 | John Francis Twisden - Mechanics - 1868 - 364 pages
...minute is expended in filling or emptying the box. Am. (1) 181 tons. (2) 39|tons. Er. 143.—If 4 cwt. of material are drawn from a depth of 80 fathoms by a rope 5 in. in circumference, how many units of work are expended in raising it, and what horse-power is... | |
 | Great Britain. Education Department. Department of Science and Art - 1886 - 640 pages
...than Jive questions. The value attached to each question is shown in brackets after the question. 21. Four cwts. of material are drawn from a depth of 80 fathoms by a rope weighing 1'la Ibs. per linear foot; how many units of work are expended ? What horse-power would be required... | |
 | Thomas Minchin Goodeve - Mechanics - 1891 - 392 pages
...inches, what would have been its fall after the first five strokes ? Ans. 8'79 inches. 97. Four cwt. of material are drawn from a depth of 80 fathoms by...linear foot ; how many units of work are expended? What horse-power would be required to raise the material in 4^ minutes? Ans. 347,520 foot-lbs. ; 2... | |
 | Thomas Minchin Goodeve - Mechanics - 1891 - 392 pages
...inches, what would have been its fall after the first five strokes ? Ans. 879 inches. 97. Four cwt. of material are drawn from a depth of 80 fathoms by...linear foot ; how many units of work are expended ? What horse-power would be required to raise the material in 4^ minutes ? A ns. 347,520 foot-Ibs.... | |
 | John Perry - Mechanical engineering - 1897 - 724 pages
...Ibs. per foot ; what work is done in lifting chain and weight? Ans., 3,328,000 foot-lbs. 23. Four cwt. of material are drawn from a depth of 80 fathoms by a rope weighing I -15 Ibs. per linear foot ; howmuchwork is done altogether, and how much per cent, is done, in lifting... | |
 | William Wade Fitzherbert Pullen - Mechanics - 1902 - 436 pages
...over a wheel, how many units of work would he perform in I minute? Ans. 22,880 ft. -Ibs. 11. Four cwt. of material are drawn from a depth of 80 fathoms by a rope weighing I "15 Ibs. per linear foot : how many units of work are expended ? What horse-power would be required... | |
 | Frank Berry Sanborn - Mechanics - 1902 - 170 pages
...useful manpower, if a man-power is defined as 3 500 foot-pounds per minute ? 45. Four hundred weight of material are drawn from a depth of 80 fathoms by a rope weighing 1.15 pounds per linear foot. How much work is done altogether, and how much per cent is done in lifting... | |
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Of course, the student will readily see that it is not always necessary to construct a diagram of work before arriving at the answer. All that is necessary to know, is the mean resistance during the displacement. Thus, in the above example, the mean resistance... 
