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.

---

Definitions:

Differential Reproduction

A process where individuals with certain traits reproduce more than others, leading to changes in genetic characteristics over generations.

Population Growth

The increase in the number of individuals in a population, influenced by birth rates, death rates, immigration, and emigration.

Thomas Malthus

An English economist and demographer, best known for his theory that population growth will always tend to outrun the food supply.

Mutation

Change in the nucleotide structure of an organism’s DNA.