(P1.21) Consider a rigid body rotating with a constant angular velocity v radians per second about a fixed axis through O as in Figure 1.14. Let r be the distance vector from O to P, the position of a particle in the body. The magnitude of the velocity u of the body at P is Mu = d M v = M r sin u Mv or u = v 3 r. If the rigid body is rotating at 3 rad/s about an axis parallel to ax 2 2ay 1 2az and passing through point 12, 23, 12, determine the velocity of the body at (1, 3, 4).
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