A 20-Kg Traffic Light Hangs Midway on a Cable Between

Multiple Choice

A 20-kg traffic light hangs midway on a cable between two poles 40 meters apart.If the sag in the cable is 0.40 meters,what is the tension in each side of the cable?

A) 12 000 N
B) 9 800 N
C) 4 900 N
D) 980 N