A Small Sphere Attached to a Light Rigid Rod Rotates

question 34

Multiple Choice

A small sphere attached to a light rigid rod rotates about an axis perpendicular to and fixed to the other end of the rod. Relative to the positive direction of the axis of rotation, the angular positions of the sphere are positive, its angular velocity is positive, and its angular acceleration is negative. The sphere is

• A) rotating clockwise and slowing down.
• B) rotating counterclockwise and slowing down.
• C) rotating clockwise and speeding up.
• D) rotating counterclockwise and speeding up.
• E) first rotating clockwise and then counterclockwise.

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Definitions:

Positive Reinforcement

A process in which presenting a stimulus following a behavior increases the likelihood of the behavior occurring again.

Stimulus

A stimulus is anything in the environment that one can respond to.

Behavior

The range of actions and mannerisms made by individuals, organisms, systems, or artificial entities in conjunction with themselves or their environment.

Frequency

The rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light).