A Person Sits on a Freely Spinning Lab Stool That

question 56

Multiple Choice

A person sits on a freely spinning lab stool that has no friction in its axle. When this person extends her arms,

• A) her moment of inertia increases and her angular speed remains the same.
• B) her moment of inertia increases and her angular speed decreases.
• C) her moment of inertia decreases and her angular speed increases.
• D) her moment of inertia increases and her angular speed increases.
• E) her moment of inertia decreases and her angular speed decreases.

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Definitions:

Linear Force

A force that acts in a straight line, causing movement or change in velocity in the direction of the force applied.

Rockwell Automatic Slack Adjusters

Automatic adjusters designed to maintain the correct distance between the brake drum and brake lining.

Stroke-Sensing Adjustment

A technology in hydraulic systems that allows for the automatic calibration or adjustment of the stroke length based on detected changes or requirements.

Gunnite Slack Adjusters

A type of slack adjuster used in air brake systems of commercial vehicles, employing a slack adjustment mechanism to maintain brake efficiency.