Final answer:
The tension in each of the three cables supporting a traffic light weighing 395 Newtons is 131.67 N, assuming the tensions are equal and the system is in equilibrium.
Step-by-step explanation:
The question asks to find the tension in each of the three cables supporting a traffic light weighing 395 Newtons. If equal tensions are assumed for all three cables and the traffic light is in equilibrium, then the total tension must balance the weight of the traffic light. Since 395 divided by 3 gives an answer of approximately 131.67, the correct answer is (A) 131.67 N each. This calculation assumes that the angles of the cables do not significantly affect the distribution of tension, which is a simplification often made in introductory physics problems.