Two People, Each of 70 Kg Mass, Are Riding in an Elevator

question 8

Multiple Choice

Two people, each of 70 kg mass, are riding in an elevator. One is standing on the floor. The other is hanging on a rope suspended from the ceiling. Compare the force $\overrightarrow{\mathbf{F}}_{{F}}$ the floor exerts on the first person to the force $\overrightarrow{\mathbf{F}}_{{R}}$ the rope exerts on the second person. Which statement is correct?

• A)They are equal and opposite in direction.
• B)They are equal and have the same direction.
• C) \(\overrightarrow{\mathbf{F}}_{{R}}\) is greater than \(\overrightarrow{\mathbf{F}}_{{F}}\) , but they have the same direction.
• D) \(\overrightarrow{\mathrm{F}}_{R}\) is greater than \(\overrightarrow{\mathbf{F}}_{{F}}\) , but they have opposite directions.
• E) \(\overrightarrow{\mathrm{F}}_{R}\) is less than \(\overrightarrow{\mathbf{F}}_{{F}}\) , but they have the same direction.

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Definitions:

Population Growth

Refers to the increase in the number of individuals in a population.

Food Supply

The total amount of food available for consumption by a population, including imports, exports, and domestically produced goods.

Thomas Robert Malthus

An English cleric and scholar known for his theories on population growth, arguing that population increases geometrically while food supply increases arithmetically, leading to inevitable population checks.

Per Capita GDPs

The measure of a country's economic output that accounts for its number of people, essentially dividing the GDP by the population.