1. The problem statement, all variables and given/known data hi again ,, help me to get moment of inertia A solid sphere, of mass 1.5 kg and radius 5 cm, is connected to the end of a vertical rod along a y–axis, of mass 2 kg and length 35 cm. The rod can rotate about z–axis passing through the other end, as show in the figure. a) What is the moment of inertia of the system (sphere + rod) about z–axis? b) Starting from rest, the system rotates clockwise around the z–axis from the initial vertical orientation, what is its angular speed when it is inverted? 2. Relevant equations The moment of inertia about the center of mass: Irod = ML^2/12 and Isphere = (2/5)mR^2 3. The attempt at a solution i tried to solve (I still don't how to get moment of inertia yet) like this : I=Irod + m(L/2)^2 + (2/5)mR^2+m(LR)^2 = (1/3)ML^2+(7/5)mR^2 is it right ??