Which description does the phrase "mechanical advantage" most closely relate to?



A. The same amount of work using less force.

B. The same amount of power using less work.

C. The same amount of work using less power.

D. The same amount of power using less pulleys.

To determine the correct answer, let's first understand the concept of mechanical advantage. Mechanical advantage refers to the ability of a machine to multiply the force applied to it. It is a measure of how much a machine amplifies or increases an input force.

Now, let's analyze the options:

A. The same amount of work using less force: This does not accurately describe mechanical advantage because mechanical advantage enables us to achieve more work with less force, not the same amount of work.

B. The same amount of power using less work: This option does not relate to mechanical advantage because power is the rate at which work is done, and mechanical advantage focuses on the force amplification, not the work-done rate.

C. The same amount of work using less power: This option is the most accurate description of mechanical advantage. Mechanical advantage allows us to do the same amount of work using less power or a lower input force.

D. The same amount of power using fewer pulleys: This option is not necessarily related to mechanical advantage because mechanical advantage is not solely dependent on the number of pulleys used. It is a broader concept that encompasses various factors.

Therefore, the correct answer is C. The phrase "mechanical advantage" most closely relates to achieving the same amount of work using less power.

The correct answer is A. The phrase "mechanical advantage" most closely relates to accomplishing the same amount of work using less force.