In reference to the image below, if you applied force on the door at different places on the door, __C __represents the place that would make it easiest (require the least effort force) to open the door. This position has the __longest __ moment arm for the effort.

Question

In reference to the image below,  if you applied force on the door at different places on the door, __C __represents the place that would make it easiest (require the least effort force) to open the door. This position has the __longest __ moment arm for the effort.

BlackTom AI · Accepted Answer

To analyze this door-opening scenario, I’ll look at how the location where you push (or apply force) affects the effort needed.
Option A, B, C refer to different points along the door where force could be applied. The key idea is that the moment arm is the perpendicular distance from the hinge (the pivot) to the line of action of your force.
- If you push very close to the hinge, the moment arm is small, so the torque produced by your push is small and you would need a larger force to achieve the same door rotation. This makes opening the door harder, not easier.
- If you push farther from the hinge, the moment arm becomes larger, producing more torque for the same force. This means you can open the door with less effort.
- If you push at the far edge of the door (the largest possible moment arm in this setup), you gain the maximum torque for a given force, making it the easiest location to open the door.
Now, considering the labels:
- For the first dropdown (which location makes it easiest to open the door), the correct choice is the position with the largest moment arm. That corresponds to the point farthest from the hinge, which is option C. Hence, choosing C as the answer aligns with the idea of maximizing the moment arm to minimize required effort.
- For the second dropdown (the position that has the longest moment arm for the effort), the correct description is the word that matches the same concept: the longest moment arm occurs at the farthest point from the hinge, i.e., the edge of the door. Therefore, the word to fill in is longest.
In summary, selecting C identifies the location that yields the greatest moment arm, making it easiest to open the door, and the term that describes this largest lever arm is longest.

2025FA-HES-207-001 A. Exam 2A- Requires Respondus LockDown Browser

In reference to the image below, if you applied force on the door at different places on the door, C represents the place that would make it easiest (require the least effort force) to open the door. This position has the longest moment arm for the effort.

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2025FA-HES-207-001 A. Exam 2A- Requires Respondus LockDown Browser

In reference to the image below, if you applied force on the door at different places on the door, __C __represents the place that would make it easiest (require the least effort force) to open the door. This position has the __longest __ moment arm for the effort.

View Explanation

Log in for full answers

Similar Questions

Problem 18a. (2 points) a) With reference ... about point A.

If the weight in a wheelbarrow is 400 lbs and is 15 inches from the center of the wheel, and the handles are 60 inches from the center of the wheel, how much force is required to lift the wheelbarrow?

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In reference to the image below, if you applied force on the door at different places on the door, C represents the place that would make it easiest (require the least effort force) to open the door. This position has the longest moment arm for the effort.

Torque is force multiplied by moment arm . In the diagram below, the line of force that produces torque on the ball is B ?