Two small balls of the same size and of masses `m_(1)` and `m_(2) (m_(1) gt m_(2))` are tied by a thin weightless thread and dropped from a balloon. The tension T of the thread during the flight towards the ground after the motion of the balls has become steady state is (steady state means that the balls are coming down with uniform velocity due to the forces weight, air friction and upthrust). Consider that air is still without any wind below, during the motion of the balls through air:
A. zero
B. `((m_(1)-m_(2))g)/2`
C. `((m_(1)+m_(2))g)/2`
D. `m_(1)g`
