Question

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 the distance a from
the centre 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 become 2x, is :
[IIT-JEE 20071​

Answer 1

Answer: answer is given in the attached explanation

Explanation: the answer and the explanation is attached over here.