Question

A star with a mass of 3.72 x 1030 kilograms and a radius of 8.67 x 108 meters rotates on its axis once every 32 days. A star is a solid sphere, which has a k value of 2/5. What is the moment of inertia of the star? Include units in your answer. Answer must be in 3 significant digits.

Answer 1

Given data:

* The mass of the star is,

`m=3.72*10^(30)\text{ kg}`

* The radius of the star is,

`R=8.67*10^8\text{ m}`

Solution:

The moment of inertia of star in terms of mass and radius,

`I=(2)/(5)mR^2`

Substituting the known values,