When a mass is rotating in a plane about a fixed point, its angular...

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When a mass is rotating in a plane about a fixed point, its angular momentum is
\( \mathrm{P} \) directed along

W
(1) The radius
(2) The tangent to orbit
(3) Line at an angle of \( 45^{\circ} \) to the plane of rotation
(4) The axis of rotation
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