Question
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along
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a line perpendicular to the plane of rotation
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the line making an angle of 45o to the plane of rotation
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the radius
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the tangent to the orbit
Solution
A.
a line perpendicular to the plane of rotation
We knows L = m (r x v)
So, here, angular momentum is directed along a line perpendicular to the plane of rotation.
