When a mass is rotating in a plane about a fixed point, its angular momentum is directed along –
A. a line perpendicular to the plane of rotation
B. the line making an angle of 45° to the plane of rotation
C. the radius
D. tangent to the path [AIPMT 2012]
Answer:A
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along –
A. a line perpendicular to the plane of rotation B. the line making an angle of 45° to the plane of rotation C. the radius D. tangent to the path [AIPMT 2012]