Question

How is the mechanical advantage related to the total number of pulleys in the pully system?(2 points)
Responses

The number of pulleys is always 10x the mechanical advantage.
The number of pulleys is always 10x the mechanical advantage.

There is no relation between the number of pulleys and mechanical advantage.
There is no relation between the number of pulleys and mechanical advantage.

The mechanical advantage of a pulley system is NOT directly proportional to the total number of pulleys.
The mechanical advantage of a pulley system is NOT directly proportional to the total number of pulleys.

The mechanical advantage of a pulley system is directly proportional to the total number of pulleys.
The mechanical advantage of a pulley system is directly proportional to the total number of pulleys.

Answer 1

Correct answer: "The mechanical advantage of a pulley system is NOT directly proportional to the total number of pulleys."

Brief explanation: Mechanical advantage (MA) depends on how many rope segments support the load (the number of supporting strands), not simply the count of pulleys. For example, one fixed pulley gives MA = 1, one movable pulley gives MA = 2, and a block‑and‑tackle with n supporting rope segments gives MA = n. Different arrangements with the same number of pulleys can have different MAs.