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<p>Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.
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<br>Subjects: forces; equal; velocity; gravity; parallel; force; resultant; point; plane; denoting; infinitely small; material point; accelerating force; fixed point; parallel forces; forces applied; three forces; centrifugal force; middle point; spaces described</div>
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Isaac Wilber Jackson</div>
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