Very Simple Rotation Inertia of a Thin Rod Problem

[Oijl]

Homework Statement

Calculate the rotational inertia of a meter stick, with mass 0.68 kg, about an axis perpendicular to the stick and located at the 21 cm mark. (Treat the stick as a thin rod.)

Homework Equations

I = integral of radius squared with respect to mass

The Attempt at a Solution

I'm not quite sure how to explain my issue here, but I think all I need is to see this worked out, and then I could probably understand the nature of these problems. Thanks.

 

[aniketp]

You could use the parallel axis theoram if you know how to find the M.I about the centre of mass of the rod (the centre)