The ride's operator, a worried-looking man named Joe, approached Emily. "Please, you have to help me! I don't know what's going on. The ride was working fine yesterday, but now it's malfunctioning. I've tried adjusting the speed and everything, but nothing seems to work."

With Emily's diagnosis, Joe quickly called the park's maintenance team to inspect and repair the ride. Within hours, the Tornado Swing was fixed, and the park visitors were once again able to enjoy the thrilling ride.

Emily, being an engineer and a fan of dynamics, offered to help Joe investigate the issue. She recalled the concepts she had just read about in Chapter 16 - specifically, the work-energy principle and the conservation of energy.