Question

A couple can result in which type of motion:

• A. Translational motion
• B. Vibrational motion
• C. Both translation and vibration motion
• D. Rotational motion

Hint:

A couple produces only rotational motion and does not cause any translational or vibrational motion.

Answer 1

The Correct Option is D

A couple is a pair of equal and opposite forces whose lines of action do not coincide. This produces a rotational effect on the object to which the couple is applied. Step 1: Understanding a couple's effect.
When a couple acts on a body, it generates a turning or rotational effect around a point or axis. This does not result in any translation of the object, but causes rotation about its center.
Step 2: Conclusion.
Therefore, a couple can only result in rotational motion.
Final Answer:} (D) Rotational motion