What Is the Moment of Inertia of a Sphere About an Axis on Its Edge?

[Rker]

Homework Statement

The moment of inertia of a sphere rotating about an axis through its center is (2/5)MR^2, where M is the mass and R is the radius of the sphere. What is the moment of inertia of the sphere about an axis on the edge of the sphere?

a. 0.4 MR^2
b. 1.4 MR^2
c. 0.9 MR^2
d. 0.6 MR^2

Homework Equations

I = (2/5)MR^2

The Attempt at a Solution

I think it's just a. since nothing besides the equation is given.

 

[Delphi51]

Look up the "parallel Axis Theorem" in your textbook.
http://en.wikipedia.org/wiki/Parallel_axis_theorem