A System of Natural Philosophy in Which Are Explained the Principles of Mechani
A System of Natural Philosophy in Which Are Explained the Principles of Mechani
J L John Lee Comstock
The book A System of Natural Philosophy in Which Are Explained the Principles of Mechani was written by author J L John Lee Comstock Here you can read free online of A System of Natural Philosophy in Which Are Explained the Principles of Mechani book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A System of Natural Philosophy in Which Are Explained the Principles of Mechani a good or bad book?
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Suppose the FIG. In. Extremity 1, Fig. Ill, to be presented up- ward, as. In the figure, the screw itself being inclined as represent- ed. Then, from its peculiar form and po- sition, it is evident, that commencing at 1, the screw will de- scend until we arrive at a certain point, 2 ; in proceeding from 2 to 3, it will ascend. Thus, 2 is a point so situated that the parts of the screw on both sides of it ascend, and therefore if any body, as a ball, were placed in the tube at 2, it could not mo...ve in either direc- tion without ascending. Again, the point 3 is so situated, that the tube on each side of it descends ; and as we proceed we find another point, 4, which, like 2, is so placed, that the tube on both sides of it ascends, and, therefore, a body placed at 4, could not move without ascending. In like manner, there is a series of other points along the tube, from which it either de- scends or ascends, as is obvious by inspection. Now let us suppose a ball, less in size than the bore of the tube, so as to move freely in it, to be dropped in at 1.
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