A Disk with a Rotational Inertia of 5

question 33

Multiple Choice

A disk with a rotational inertia of 5.0 kg∙m² and a radius of 0.25 m rotates on a fixed axis perpendicular to the disk and through its center.A force of 2.0 N is applied tangentially to the rim.As the disk turns through half a revolution the work done by the force is:

• A)1.6 J
• B)2.5 J
• C)6.3 J
• D)10 J
• E)40 J

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Definitions:

Masked Design

A research design in which participants do not know which treatment group they are in to prevent bias; also known as a blinded design.

Placebo

An inert or non-therapeutic substance given to a control group in clinical trials to assess the psychological impact of receiving a treatment.

Natural

Naturally occurring and not manufactured or created by human beings.

Biased

Showing an unfair preference or prejudice for or against something or someone.