1. The problem statement, all variables and given/known data In the figure below, the pendulum consists of a uniform disk with radius r = 10 cm and mass 480 g attached to a uniform rod with length L = 500 mm and mass 260 g. 2. Relevant equations 3. The attempt at a solution I'm going to cut to the chase. I'm basically going with: I = 1/2MR^2 + M(R+l)^2 + ml^2 / 3 Where M and R are mass and radius of disk and m and l are mass and length of rod. My final answer has come to .14653 every time, and it is wrong.