Can the Moment of Inertia about Y-Y Axis be negative?
No, the Moment of Inertia about Y-Y Axis, measured in Second Moment of Area cannot be negative.
What unit is used to measure Moment of Inertia about Y-Y Axis?
Moment of Inertia about Y-Y Axis is usually measured using the Millimeter⁴[mm⁴] for Second Moment of Area. Meter⁴[mm⁴], Centimeter⁴[mm⁴] are the few other units in which Moment of Inertia about Y-Y Axis can be measured.