A table with smooth horizontal surface is placed in a cabin which moves in a circle of a large radius R (figure). A smooth pulley of small radius is fastened to the table. Two masses m and 2m placed on the table are connected through a string over the pulley. Initially the masses are held by a person with the string along the outward radius and then the system is released from rest (with respect to the cabin). Find the value of where a is the magnitude of the initial acceleration of the masses as seen from the cabin and ‘ T ’ is the tension in the string.