In part (d) of Table 9.2, the thickness of the plate must be much less than a for the expression given for I to apply. But in part (c), the expression given for I applies no matter how thick the plate is. Explain.
Solution 16 DQ Step 1: This is because moment of inertia I depends on the mass and density of the object. In the given example the sample in option (c ) has is a thick rectangular plate , and the momentum of inertia depends on the mass and dimensions of the rectangle, and it is along the center of mass Whereas if we consider a thin plate as in example (d) , thin plate , the length of the axis is pivoted along the length of the axis and moment of inertia I = 1/2Ma as it has 2 line of axis.