Question

The four masses shown in the figure below are connected bymassless, rigid rods.

http://www.webassign.net/knight/p13-17.gif

(a) Find the coordinates of the center of mass if MA = 140 g and MB= MC = MD = 190 g.
x = _____m
y = _____m

(b) Find the moment of inertia about an axis that passes throughmass A and is perpendicular to the page.
______kg m2

(c) Find the moment of inertia about a diagonal axis that passesthrough masses B and D.
_______ kg·m2