Let be the angular momentum of a particle A about the origin O of an inertial (x, y, z) r...

Let be the angular momentum of a particle A about the origin O of an inertial (x, y, z) reference frame at the instant shown. Let the mass of A be m = 0.75 kg, and let the coordinates of A at the instant shown be (1, 2, 0) m.

If A moves only in the x y plane, determine the vector component of the acceleration of A perpendicular to the position vector of A at the instant shown if, at this instant, the moment acting on A relative to the origin O is .

Figure P5.121