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<p>Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
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<br>Subjects: forces; equal; gravity; velocity; parallel; force; resultant; plane; point; infinitely small; material point; accelerating force; parallel forces; forces applied; fixed point; three forces; centrifugal force; radius vector; middle point</div>
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Isaac Wilber Jackson</div>
Internet Archive identifier