Back to 11.6 The Big Bang

11.6 Exercise 13

Avg difficulty 2.5

Show that the velocity of a star orbiting its galaxy in a circular orbit is inversely proportional to the square root of its orbital radius, assuming the mass of the stars inside its orbit acts like a single mass at the center of the galaxy. You may use an equation from a previous chapter to support your conclusion, but you must justify its use and define all terms used.

OpenStax University Physics Volume 3, 11.6 The Big Bang, exercise 13

AI Tutor

Adapted from University Physics Volume 3 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 3. Imported at revision db44eb9.