One end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft 80.0 m deep. The rope is stretched taut by a box of mineral samples with mass 20.0 kg attached at the lower end. The mass of the rope is 2.00 kg. The geologist at the bottom of the mine signals to his colleague at the top by jerking the rope sideways. Find the speed of a transverse wave on the rope.