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| 36 | The Solar System |
over 12¾ miles deep, not the shallow, that would be nearest under the Moon.
Disturbing force. Consider a body revolving freely around another in a circle, and disturbed in this motion by a third. This is the case with any particle of the ocean when we neglect pressure and friction. Connect the three bodies by lines, and, keeping their directions, increase their lengths inversely
as their squares, and join the ends. The disturbing force will be represented by the connecting line, on the principle of the composition of forces.
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