Rotational Inertia Practice Test

Two point masses, $$m_1 = 2.0$$ kg and $$m_2 = 3.0$$ kg, are located at $$x_1 = -1.0$$ m and $$x_2 = 2.0$$ m, respectively, on the x-axis. What is the rotational inertia of this system about the y-axis?

A thin hoop of mass $$M$$ and radius $$R$$ has two small beads, each of mass $$m$$, attached to its rim at opposite ends of a diameter. What is the total rotational inertia of the hoop-beads system about an axis perpendicular to the plane of the hoop and passing through its center?