The 100-kg projectile shown has a radius of gyration of 100 mm about its axis of symmetry...

The 100-kg projectile shown has a radius of gyration of 100 mm about its axis of symmetry Gx and a radius of gyration of 250 mm about the transverse axis Gy. Its angular velocity ω can be resolved into two components; one component, directed along Gx, measures the rate of spin of the projectile, while the other component, directed along GD, measures its rate of precession. Knowing that θ = 6° and that the angular momentum of the projectile about its mass center G is HG = (500 g · m2/s)i – (10 g · m2/s)j, determine (a) the rate of spin, (b) the rate of precession.

Fig. P18.12