Figure shows an arrangement of 15 identical disks that have been glued together in a rod-like shape of length L = 1.0000 m and (total) mass M = 100.0 mg. The disk arrangement can rotate about a perpendicular axis through its central disk at point O.

(a) What is the rotational inertia of the arrangement about that axis?

(b) If we approximated the arrangement as being a uniform rod of mass M and length L, what percentage error would we make in using the formula in Table 10-2e to calculate the rotationalinertia?

Transcribed Image Text:

တာနေတာ -L-