Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 45 kg, m2 = 39 kg, and m3 = 50 kg. The pulling force is equal to T3 = 46 N.

Answer 1

46 = (45 + 39 + 50) a
solve for a
then force on block 1
= 46 - (39+50) a
etc