A 2.0-kg hoop rolls without slipping on a horizontal surface so that its center proceeds to the right with a constant linear speed of 6.0 m/s.
-Which one of the following statements is true concerning the angular momentum of this hoop?
A)It points into the paper.
B)It points out of the paper.
C)It points to the left.
D)It points to the right.
E)It varies from point to point on the hoop.

Question

A 2.0-kg hoop rolls without slipping on a horizontal surface so that its center proceeds to the right with a constant linear speed of 6.0 m/s. 
-Which one of the following statements is true concerning the angular momentum of this hoop?
A)It points into the paper. 
B)It points out of the paper. 
C)It points to the left. 
D)It points to the right. 
E)It varies from point to point on the hoop.

Quizplus · Accepted Answer

The angular momentum of a hoop rolling without slipping is directed along the axis of rotation, which is perpendicular to the plane of the hoop and points into the paper.

A 20-Kg Hoop Rolls Without Slipping on a Horizontal Surface So