The Economics of Railroad Construction
The Economics of Railroad Construction
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In our eReader you can find the full English version of the book. Read The Economics of Railroad Construction Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Economics of Railroad Construction
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, G = 20 pounds per ton ; therefore, for any per cent of grade, (j= v (20x per cent of grade) pounds per ton. When mov- ing up and down grade this force G must be overcome in addition to all the other resistances. When moving down a grade the force G assists the motion, and the net force tending to move the car or train down the grade equals G minus the resisting forces. If the resisting forces are less than G, then the train will keep moving down the grade, and its velocity will increase until... the added resist- ance to increased velocity just equals G. The train will then move at this uniform velocity as long as such con- ditions remain constant. If the resistance of a train averaged 6 pounds per ton for a velocity of 20 miles per hour and the train were started on a down grade of 0. 3% at this velocity, then it would move indefinitely at this speed down such a grade. If a train were started down a 1% grade at a velocity of say 10 miles per hour, the grade force will equal 20 pounds per ton on the 1% grade.
What to read after The Economics of Railroad Construction?
You can find similar books in the "Read Also" column, or choose other free books by Webb, Walter Loring, 1863-1941 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
, G = 20 pounds per ton ; therefore, for any per cent of grade, (j= v (20x per cent of grade) pounds per ton. When mov- ing up and down grade this force G must be overcome in addition to all the other resistances. When moving down a grade the force G assists the motion, and the net force tending to move the car or train down the grade equals G minus the resisting forces. If the resisting forces are less than G, then the train will keep moving down the grade, and its velocity will increase until... the added resist- ance to increased velocity just equals G. The train will then move at this uniform velocity as long as such con- ditions remain constant. If the resistance of a train averaged 6 pounds per ton for a velocity of 20 miles per hour and the train were started on a down grade of 0. 3% at this velocity, then it would move indefinitely at this speed down such a grade. If a train were started down a 1% grade at a velocity of say 10 miles per hour, the grade force will equal 20 pounds per ton on the 1% grade.
What to read after The Economics of Railroad Construction?
You can find similar books in the "Read Also" column, or choose other free books by Webb, Walter Loring, 1863-1941 to read onlineMoreLess
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