1. The problem statement, all variables and given/known data A 50 kg traffic light is suspended above an intersection by a continuous steel cable. The cable has a diameter of 1.0 cm, and the light is depressed 12 degrees below the horizontal. What is the percentage increase in the length of the cable due to the mass of the traffic light? 2. Relevant equations Stress=Force/Area Strain=Change in length/original length Young's elastic modulus(E)=Stress/Strain Area = (pi) x (r^2) E for steel is 200 x 10^9 3. The attempt at a solution Well I found the stress and strain, but now I am lost.