NEET 2019 Model Question Paper 3

Two masses each equal to ‘nT are lying on x-axis at (-a,0) and (+a,0) respectively as shown in fig. They are connected by a light string. A force ‘F’ is applied at the origin and along yaxis. As a result, masses move towards each other. What is the acceleration of each mass? Assume the instantaneous position of masses as (-x, 0) and (x,0) respectively