Two Equal Magnitude Forces Are in Opposite Directions, and Their

question 2

Multiple Choice

Two equal magnitude forces are in opposite directions, and their lines of action are separated by distance d. These two forces are applied to a solid disk, which is mounted on a frictionless axle. If d is half the radius r of the disk, which of the following positions for the forces would give the most torque?

• A) One force on a line touching the circumference of the disk and the other on a line halfway to the center.
• B) One force on a line at a distance d from the center and the other on a line through the center of the disk.
• C) One force on a line at a distance d/2 from the center of the disk and the other on a line at a distance d/2 on the opposite side of the center of the disk.
• D) Since all the above orientations give the same torque, choose this answer.

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Definitions:

Auscultating

The act of listening to the internal sounds of the body, typically using a stethoscope, as part of a medical examination.

Palpating

The act of examining a part of the body by touch, especially for medical purposes, to detect conditions or characteristics.

Scanning

The act of examining something closely, often using a machine or electronic device to detect a specific feature or to gather information.

Apex

The point, tip, or summit of anything; in reference to the heart, the point of maximum impulse of the heart against the chest wall.