Why is Perseverance Rotating?

I was checking out the NASA Mars 2020 site which visualizes the rover on it's way to Mars, and I noticed that the rover is rotating at approximately 2 two RPMs. Can anyone explain why?

https://eyes.nasa.gov/apps/orrery/#/sc_perseverance

Submitted September 23, 2020 at 07:55PM by chaoticneutral262 https://ift.tt/301SVF9