1. The problem statement, all variables and given/known data Two particles, each with mass m = 0.85 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.6 cm and mass M = 1.2 kg. The combination rotates around the rotation axis with angular speed w = 0.30 rad/s. Measured about O, what are the combination's (a) rotational inertia and (b) kinetic energy? http://www.lowellphysics.org/beta/Textbook%20Resources/Chapter%2010.%20Rotation/Problems/c10x10_12.xform_files/nw0536-n.gif 2. Relevant equations parallel-axis theorem: I = Icom + Mh^2 rotational inertia for thin rod: I = 1/12ML^2 K = 1/2Iomega^2 3. The attempt at a solution Inet = Irod1 + Iparticle1 + Irod2 +Iparticle2 Inet = 1/12Md^2 + Md^2 + 1/12M(2d)^2 + M(2d)^2 help!