PHYSICS · Subjective · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
Two poles are 20m apart. A straight, light wire is stretched between their tops, and a traffic light of mass 12kg is hung at the midpoint, causing the wire to sag by 0.40m at that point. Assuming the wire forms two straight segments meeting at the lowest point, calculate the tension in the wire at this lowest point. Take g=9.8m/s2.