Question

When a mass is rotating in a plane about a fixed point its angular momentum is directed along

• A. the radius
• B. the tangent the orbit
• C. the line at angle of $45^{\circ}$ to the plane of rotation
• D. the axis of rotation

Answer 1

Answer: (D)

the axis of rotation

Answer 2

When a mass is rotating in a plane about a fixed point, its angular momentum is directed along the axis of rotation.