It's part of the Airman Certification Standards for Remote Pilots, so you could certainly be asked questions from this area.
Knowledge The applicant demonstrates understanding of:
UA.IV.A.K1 General loading and performance, including:
UA.IV.A.K1a a. Effects of loading changes
UA.IV.A.K1b b. Balance, stability, and center of gravity
UA.IV.A.K2 Importance and use of performance data to calculate the effect on the aircraft’s performance of an sUAS.