System of Particles and Rotational Motion - Result Question 47

50. A couple produces

[1997]

(a) no motion

(b) purely linear motion

(c) purely rotational motion

(d) linear and rotational

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Answer:

Correct Answer: 50. (c)

Solution:

  1. (c) A couple is formed of two equal and opposite forces at some separation; so net force is zero. Hence, a couple does not produce translatory motion; but it causes change in rotational motion.