Concept Items
6.1 Angle of Rotation and Angular Velocity
What kind of motion is called spin?
- Spin is rotational motion of an object about an axis parallel to the axis of the object.
- Spin is translational motion of an object about an axis parallel to the axis of the object.
- Spin is the rotational motion of an object about its center of mass.
- Spin is translational motion of an object about its own axis.
6.3 Rotational Motion
Conventionally, for which direction of rotation of an object is angular acceleration considered positive?
- the positive x direction of the coordinate system
- the negative x direction of the coordinate system
- the counterclockwise direction
- the clockwise direction