A 20-Kg Solid Disk Rolls Without Slipping on a Horizontal Surface

question 37

Multiple Choice

A 2.0-kg solid disk rolls without slipping on a horizontal surface so that its center proceeds to the right with speed 5.0 m/s.
The point A is the uppermost point on the disk and the point B is along the horizontal line that connects the center of the disk to the rim.
-What is the instantaneous speed of the point of the disk that makes contact with the surface?

• A)zero m/s
• B)5.0 m/s
• C)7.1 m/s
• D)7.5 m/s
• E)10.0 m/s

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Definitions:

Physical Property

A characteristic of a substance that can be observed or measured without changing the substance's chemical identity, examples include density, melting point, and conductivity.

Trans Fat

An unhealthy type of fat that is created by adding hydrogen to liquid vegetable oils (hydrogenation), widely associated with increased risk of heart disease.

Palmitic Acid

A saturated fatty acid commonly found in animals and plants, often used in soap and other cosmetics.

Organic Compound

Molecules typically containing carbon atoms in rings or long chains, where other atoms (e.g., hydrogen, oxygen, nitrogen) are attached.