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Q. A 1.4 kg object at x = 2 m, y = 3.10 m moves at 4.620 m/s at an angle 45° north of east. Compute the magnitude of the object's angular momentum about origin.

Q. Find out the force each hand exerts on the shaft when the shaft is rotating in the horizontal plane about its center at 5×10-2 {rm rev/s}.

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