Two forces form a couple.
Which statement describes the two forces?
A They are in the same direction.
B They are perpendicular to each other.
C They have the same magnitude.
D They pass through the same point.
ANSWER: C
The Physics Behind
- A pair of forces known as a couple must be:
- equal in magnitude
- parallel, but opposite in direction
- separated by a distance d.
- The turning effect or moment of a couple is known as its torque [torque of a couple].
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