Apply the rules of Prob. 16–26 to the three-shaft system shown in the figure to create a motor shaft shish kebab.
(a) Show that the equivalent inertia Ie is given by
(b) If the overall gear reduction R is a constant nm, show that the equivalent inertia becomes
(c) If the problem is to minimize the gear-train inertia, find the ratios n and m for the values of