    // Moment for a solid circle with a mass of 2 and radius 5.
    cpFloat circle1 = cpMomentForCircle(2, 0, 5, cpvzero);

    // Moment for a hollow circle with a mass of 1, inner radius of 2 and outer radius of 6.
    cpFloat circle2 = cpMomentForCircle(1, 2, 6, cpvzero);

    // Moment for a solid circle with a mass of 1, radius of 3 and
    // centered 3 units along the x axis from the center of gravity.
    cpFloat circle3 = cpMomentForCircle(2, 0, 5, cpv(3, 0));

    // Composite object. 1x4 box centered on the center of gravity and a circle sitting on top.
    // Just add the moments together.
    cpFloat composite = cpMomentForBox(boxMass, 1, 4) + cpMomentForCircle(circleMass, 0, 1, cpv(0, 3));