This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 Excerpt: ...The above law expressed in symbols gives f=z---, where f represents the intensity of the attraction, m and m' the masses which mutually attract each other, and d= the distance between them. As an illustration let us suppose a system m, consisting of one particle p, and a system m of two particles r, s, to be situated ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 Excerpt: ...The above law expressed in symbols gives f=z---, where f represents the intensity of the attraction, m and m' the masses which mutually attract each other, and d= the distance between them. As an illustration let us suppose a system m, consisting of one particle p, and a system m of two particles r, s, to be situated at the distance unity from each other. Let the attraction between any two particles be represented by unity, p will be pulled towards in' by a force from r equal to unity, and by a force from equal to unity. The system m or the particle p will therefore be pulled towards m' or r, s, with a force represented by 2X1. Again, suppose m to consist of two particles p, q, and ni of three r, s, t; p will now be pulled towards r, s, t with a threefold force, q also will be drawn towards r, s, t with a threefold force, and, on the whole, m will be drawn towards m' with a twice threefold force, or 2x3=6-. If the distance between the systems be doubled, the force in each case becomes one-fourth of its former amount. When we wish to represent the earth as one of the attracting bodies, m' will represent the mass of the earth, d the distance of the mass m from the earth's centre. The expression then becomes g=----. Here m stands for the body which is seen to fall to the earth. The earth w! ought also to move towards m, but since the pull of the earth on m is so much greater than that of m on the earth, the latter appears to be stationary. Unless the attracting bodies are of great size the intensity of this force is small, hence gravitation may be described as a very weak force. It requires the mass of the whole earth to produce the motion of falling bodies at the earth's surface, and the weight of a body is not sensibly diminished in the neighbourhood of moun...
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Add this copy of Popular Readings in Science to cart. $63.74, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2016 by Palala Press.
