A Light Rope Passes Over a Light Frictionless Pulley Attached

question 15

Multiple Choice

A light rope passes over a light frictionless pulley attached to the ceiling.An object with a large mass is tied to one end and an object with a smaller mass is tied to the other end.Starting from rest, the heavier object moves downward, and the lighter object moves upward with an acceleration of the same magnitude.Which of the following statements is true for the system consisting of the two objects?

• A)The center of mass remains at rest.
• B)The net external force is zero.
• C)The velocity of the center of mass is a constant.
• D)The acceleration of the center of mass is g, downward.
• E)None of the above statements are true.

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Definitions:

Immovable Dedication

An offering or dedication to a deity or sacred place that is not meant to be moved, such as a statue, shrine, or architectural feature integrated within a sacred site.

Dense

Having parts closely compacted together; thick or crowded, can refer to both physical objects and abstract concepts like population or ideas.

Cylinder Seal

A cylindrical piece of stone usually about an inch or so in height, decorated with an incised design, so that a raised pattern is left when the seal is rolled over soft clay. In the ancient Near East, documents, storage jars, and other important possessions were signed, sealed, and identified in this way. Stamp seals are an earlier, flat form of seal used for similar purposes.

Sound Box

The part of a musical instrument where the sound resonates, often found in stringed instruments like guitars or violins.