packocrayons:
If the accelerometer is accurate enough, wouldn't it be able to detect these changes and output an acceleration? Then you could use that as a calibration to find the percentage of gravity compared to standard (9.8N/kg) at that location.
Theoretically yes. However, I doubt the accelerometers that most of us can afford to use in our projects would be capable that level of both accuracy and precision. I was really just engaging in some harmless snark.