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Classical Mechanics, Second Edition, 2nd Edition
book

Classical Mechanics, Second Edition, 2nd Edition

by Tai L. Chow
May 2013
Intermediate to advanced content levelIntermediate to advanced
639 pages
23h 12m
English
CRC Press
Content preview from Classical Mechanics, Second Edition, 2nd Edition
495Newtonian Gravity and Newtonian Cosmology
© 2010 Taylor & Francis Group, LLC
So, we can calculate the acceleration of one galaxy A with respect to another galaxy O. We
have associated O with the center of the sphere, and A is at a distance R from it. The acceleration
to be found is a result of the gravitational attraction of matter inside the sphere of radius R only.
According to Newton’s law, it is given by
a = GM/R
2
. (14.21)
The negative sign in Equation 14.21 reects the fact that the acceleration corresponds to attraction
rather than to repulsion.
Thus, any two galaxies in a homogeneous universe separated by a distance R experience a rela ...
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Publisher Resources

ISBN: 9781466569980