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

Question

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

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Question restatement: Torque is force multiplied by __moment arm__. In the diagram below, the line of force that produces torque on the ball is __B __?

Option 1: moment arm
To understand torque, recall that torque = r × F, where r is the position vector from the rotation axis to the line of action of the force, i.e., the moment arm. The longer the moment arm (the perpendicular distance from the axis to the line of action), the larger the torque for a given force. This option correctly identifies the concept that the torque depends on the moment arm rather than the force magnitude alone, and it fits the standard definition in rotational dynamics.

Option 2: B
In the diagram, the force labeled B is directed in such a way that its line of action does not pass through the ball’s center, creating a nonzero perpendicular distance to the axis of rotation. This means B has a finite moment arm and can generate torque on the ball. Conversely, if a force acted along a line that passed through the axis (or center in this simplified diagram), it would produce little or no torque because the moment arm would be zero. Since the question asks which line of force produces torque, B is the line that contributes a turning effect.

Additional nuance on the other option (A):
The force labeled A may appear to be applied along a direction that, in this setup, has a different lever arm relative to the rotation axis. If A’s line of action passed through the axis, its moment arm would be zero and it would not produce torque. If A’s line of action does not pass through the axis, it would also produce torque, but the diagram suggests that B is the force with the clearly defined nonzero moment arm with respect to the center used to illustrate torque.

Summary of reasoning:
- The concept of torque relies on the moment arm (the perpendicular distance from the rotation axis to the line of action). This is why option 'moment arm' is central to the definition.
- The specific force that produces torque in the diagram is the one whose line of action has a nonzero moment arm relative to the axis; in this figure, that is force B, making it the line of action responsible for creating torque on the ball.

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

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

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类似问题

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

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

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

查看解析

登录即可查看完整答案

类似问题

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?

Choose the answers that best represent appropriate sign and magnitude conventions for finding the torque about a pivot. Select all that you consider to be true.

Choose the answers that best represent appropriate sign and magnitude conventions for finding the torque about a pivot. Select all that you consider to be true.

True or False: Torque is a vector quantity; the direction of the torque matters.

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.

更多留学生实用工具

希望你的学习变得更简单

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

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.