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 below. If her mass is 50.0 kg, what is the tension in the rope at this point? Arelene's weight is 490 N. What is the net force on Arlene if the tension is 1500 N? Is the direction of the net force up or down?