A 6kg traffic light is suspended from the ceiling by a single massless cable that passes over two small frictionless pulleys, so that the two segments of the cable make an angle of 60∘ with each other (that is, each segment is 30∘ from the vertical). The light is at rest. What is the magnitude of the tension in the cable?
a) 68N
b) 34N
c) 29N
d) 49N