1. The problem statement, all variables and given/known data Arlene is to walk across a “high wire” strung horizontally between two buildings 10.0 m apart. The sag in the rope when she is at the midpoint is 10.0°, as shown in Fig. 4–47. If her mass is 50.0 kg, what is the tension in the rope at this point? 2. Relevant equations The definitions of sine and cosine. [tex]\sum F=ma[/tex] 3. The attempt at a solution I'm really confused by how the tension on the cord could be 1410N, when the rope-walker only exerts a 'weight' of 490N. Evidently, there must be some aspect of cord-tension that I do not understand.