Here’s why your wheelie suitcase wobbles
Roller luggage simulation provides physics insights possibly relevant to other vehicles
![rolling luggage](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/06/062017_mt_suitcase_FREE.jpg?fit=860%2C460&ssl=1)
ROCKIN’ ROLLER Physicists give the play-by-play of what makes rolling luggage rock back and forth.
Pavel Ilyukhin/Shutterstock