The rectangular steel plate of mass 12 kg is welded to the shaft with its plane tilted 15° from the plane (x-y) normal to the shaft axis. The shaft and plate are rotating about the fixed z-axis at the rate N = 300 rev/min. Determine the angular momentum H_O of the plate about the given axes and find its kinetic energy T.

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y |150 150 mm 150 mm 0. N 120 mm 120 mm