The Earth Its Shape Size Weight And Spin
The Earth Its Shape Size Weight And Spin
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In our eReader you can find the full English version of the book. Read The Earth Its Shape Size Weight And Spin 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 The Earth Its Shape Size Weight And Spin
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on it a pull by the Sun inversely as the square of its distance from the Sun's centre whatever the planet of which it forms a part. So the law is amply verified as regards the mass pulled and the distance.
To show that the pull is also proportional to the mass of the pulling body, we assume the law, which holds good in all cases which we investigate, that if two bodies A and B act on each other, the force which A exerts on B is equal though opposite to the P. 4 50 THE EARTH [CH.
force which B e...xerts on A. We shall, for simplicity, neglect the difference of distance of different parts of the Earth and Moon from each other. As each body pulls the other as if it were concentrated at its centre, this simplification is justified. The Earth pulls the Moon with a force proportional to the mass of the Moon, so that each pound in the Moon is pulled with an equal force. In turn each pound pulls the Earth with an equal force and the total is proportional to the number of pounds of mass pulling. Thus we may conclude that Newton's statement holds good that the gravitation pull is proportional to the product of the masses of the two pulling bodies.
What to read after The Earth Its Shape Size Weight And Spin?
You can find similar books in the "Read Also" column, or choose other free books by J H John Henry Poynting to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
on it a pull by the Sun inversely as the square of its distance from the Sun's centre whatever the planet of which it forms a part. So the law is amply verified as regards the mass pulled and the distance.
To show that the pull is also proportional to the mass of the pulling body, we assume the law, which holds good in all cases which we investigate, that if two bodies A and B act on each other, the force which A exerts on B is equal though opposite to the P. 4 50 THE EARTH [CH.
force which B e...xerts on A. We shall, for simplicity, neglect the difference of distance of different parts of the Earth and Moon from each other. As each body pulls the other as if it were concentrated at its centre, this simplification is justified. The Earth pulls the Moon with a force proportional to the mass of the Moon, so that each pound in the Moon is pulled with an equal force. In turn each pound pulls the Earth with an equal force and the total is proportional to the number of pounds of mass pulling. Thus we may conclude that Newton's statement holds good that the gravitation pull is proportional to the product of the masses of the two pulling bodies.
What to read after The Earth Its Shape Size Weight And Spin?
You can find similar books in the "Read Also" column, or choose other free books by J H John Henry Poynting to read onlineMoreLess
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