A Disk with a Rotational Inertia of 5

question 22

Multiple Choice

A disk with a rotational inertia of 5.0 kg .m² and a radius of 0.25 m rotates on a frictionless fixed axis perpendicular to the disk and through its center.A force of 8.0 N is applied tangentially to the rim.If the disk starts at rest, then after it has turned through half a revolution its angular velocity is:

• A)0.57 rad/s
• B)0.64 rad/s
• C)0.80 rad/s
• D)1.6 rad/s
• E)3.2 rad/s

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Definitions:

Self-serving Bias

The common tendency to attribute one's successes to personal characteristics and failures to external factors.

False Confidence

An unfounded belief in one's abilities or outcomes, which can lead to taking undue risks or making poor decisions.

Glass Ceiling Effect

An invisible barrier limiting career advancement of women and members of visible minorities.

Stereotyping

The oversimplified and generalized perception or judgment of a group of people based on common traits or attributes.