The three similar 50-kg masses are held at the corners of the equilateral triangle, 30 cm on each side. When one of the masses is liberated, determine its initial acceleration, if the mere forces acting on it are the gravitational forces due to the other two masses?
A)1.9 x 10-8 m/s^2
B) 6.4 x 10-8 m/s^2
C) 4.2 x 10-8 m/s^2
D) 2.5 x 10-8 m/s^2
E) 3.7 x 10-8 m/s^2