General Science
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In our eReader you can find the full English version of the book. Read General Science 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 General Science
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slowly raises Q. A very com- plex machine is that seen in Figure 117. In Section 150, -we learned that the amount of work done depends upon the force 1/2 MAN'S WAY OF HELPING HIMSELF exerted, and the distance covered, or that W force x dis- tance. A man who raises 5 pounds a height of 5 f ee t does far more work than a man who raises 5 ounces a height of 5 inches, but the product of force by distance is 25 in each case. There is difficulty because we have not selected an arbitrary unit of work.... The unit of work chosen and in use in practical affairs is the foot pound, and is defined as the work FIG. 116. - A traveling crane. Done when a force of I pound acts through a distance of I foot. A man who moves 8 pounds through 6 feet does 48 foot pounds of work, while a man who moves FIG 117. A farm engine putting in a crop.
8 ounces (| pound) through 6 inches (\ foot) does only one fourth of a foot pound of work.
WASTE U'ORK AND EFFICIENT IVORK 173 168. The Power or the Speed with which Work is Done.
What to read after General Science?
You can find similar books in the "Read Also" column, or choose other free books by Bertha May Clark to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
slowly raises Q. A very com- plex machine is that seen in Figure 117. In Section 150, -we learned that the amount of work done depends upon the force 1/2 MAN'S WAY OF HELPING HIMSELF exerted, and the distance covered, or that W force x dis- tance. A man who raises 5 pounds a height of 5 f ee t does far more work than a man who raises 5 ounces a height of 5 inches, but the product of force by distance is 25 in each case. There is difficulty because we have not selected an arbitrary unit of work.... The unit of work chosen and in use in practical affairs is the foot pound, and is defined as the work FIG. 116. - A traveling crane. Done when a force of I pound acts through a distance of I foot. A man who moves 8 pounds through 6 feet does 48 foot pounds of work, while a man who moves FIG 117. A farm engine putting in a crop.
8 ounces (| pound) through 6 inches (\ foot) does only one fourth of a foot pound of work.
WASTE U'ORK AND EFFICIENT IVORK 173 168. The Power or the Speed with which Work is Done.
What to read after General Science?
You can find similar books in the "Read Also" column, or choose other free books by Bertha May Clark to read onlineMoreLess
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