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【单选题】
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, 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 other orientations give the same torque, choose this answer.
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