Finding Principal Moments with Mohr’s Circle

Mohr’s circle is a graphical method for finding an area’s principal moments of inertia. It uses a rectangular coordinate system to plot the moments of inertia and the product of inertia. This makes the key values easier to read from the graph.

The center of Mohr’s circle comes from averaging the ...

Mohr's circle is a graphical method to determine an area's principal moments of inertia by plotting the moments and product of inertia on a rectangular coordinate system.

The average of the moments of inertia about the coordinate axes gives the circle's center from the origin and its radius is determined from the moments and the product o...