Arlene is to walk across a "high wire" strung horizontally between two buildings 10.0 apart. The sag in the rope when she is at the midpoint is 10.0 , as shown in the figure .
If her mass is 47.0 , what is the tension in the rope at this point?
The Attempt at a Solution
I know that the mass is 47 kg but I don't know how to find the acceleration or if I am even using the correct formula. Please help