Calculating Moment of Inertia Now calculate /for the same object about an axis through the center, parallel to the plane(as shown) =∑mr=m+m+m+m==4m I= ml2 m m m● Physics 121: Lecture 18, Pg 7Physics 121: Lecture 18, Pg 7 Calculating Moment of Inertia... Now calculate I for the same object about an axis through the center, parallel to the plane (as shown): m m m m L r 4 L 4m 4 L m 4 L m 4 L m 4 L I m r m 2 2 2 2 2 N i 1 2 =  i i = + + + = = I = mL2