The Science Of Mechanics by Dr. Ernst Mach

Author:Dr. Ernst Mach
Language: eng
Format: epub
Publisher: The Open Court Publishing Co.
Published: 1919-02-27T16:00:00+00:00

THE SCIENCE OF MECHANICS.

In the direction fedc. This impulse, however, ceases, the moment the liquid reaches the point/ and flowing out into the radius/^- is obliged to join in the motion of the latter. By the use of a constant stream of liquid,

therefore, the rotation of the tube may soon be stopped. But if the stream be interrupted, the fluid, in flowing off through the radius fg, will impart to the tube a motional impulse in the direction of its own motion, cdef, and the tube will turn in this direction. All these phenomena are easily explained by the law of areas.

The trade-winds, the deviation of the oceanic currents and of rivers, Foucault's pendulum experiment, and the like, may also be treated Fig -I55b - as examples of the law

Another pretty illustration is afforded by

Let a body

with the moment of inertia & rotate with the angular velocity a and, during the motion, let its moment of inertia be transformed by internal forces, say by springs, into &, a will then pass into a', where a 0 = a'Q', that is a' = a (©/©'). On any considerable diminution of the moment of inertia, a great increase of

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