Two particles of mass m each are tied at the ends of a light string of length 2 a . The…
Physics · JEE Advanced · NTA Exams — Laws of Motion
Two particles of mass m each are tied at the ends of a light string of length 2a. The whole system is kept on a frictionless horizontal surface with the string held tight so that each mass is at a distance a from the center P (as shown in the figure). Now, the mid-point of the string is pulled vertically upwards with a small but constant force F. As a result, the particles move towards each other on the surface. The magnitude of acceleration, when the separation between them becomes 2x is
Answer
(B)
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