Two blocks, one with a mass of 6 kg and one with a mass of 9 kg, are connected by a rope and are sitting on a frictionless surface. You attach a second rope to the 6 kg block and start pulling with a force of 30 N. What is the tension in the rope between the blocks?
a) 18 N
b) 6 N
c) 24 N
d) 36 N
e) 12 N
