P. 4785. The Milky Way is a so called spiral galaxy. Its shape is approximately a uniform density disc which has a small width with respect to its diameter. The Sun undergoes simple harmonic motion between the ``bottom'' and the ``top'' of this disc.
What is the period of the SHM, if the average density of the galaxy is \(\displaystyle 5.8\cdot
Deadline expired on 11 January 2016.