# Thread: Rotation Bodies - moment of inertia of square sheet

1. ## Rotation Bodies - moment of inertia of square sheet

A square sheet with a uniform density and total mass m is pivoted about an axis A in one corner of the sheet and perpendicular to the plane of the sheet as shown below. If the moment of inertia of the sheet about this axis is , what is the sheet's moment of inertia about a parallel axis, B, at the mid-point of one of its sides?

2. Originally Posted by jddery
A square sheet with a uniform density and total mass m is pivoted about an axis A in one corner of the sheet and perpendicular to the plane of the sheet as shown below. If the moment of inertia of the sheet about this axis is , what is the sheet's moment of inertia about a parallel axis, B, at the mid-point of one of its sides?

use the parallel axis theorem ...

$\displaystyle I = I_{cm} + md^2$

3. so with part of the equation md^2
would I divid that by 2 to get the mid point
and then solve for Icm ?

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# moment of inertia of squre peramid

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