![attribute table - Extracting part of string from field in QGIS Field Calculator? - Geographic Information Systems Stack Exchange attribute table - Extracting part of string from field in QGIS Field Calculator? - Geographic Information Systems Stack Exchange](https://i.stack.imgur.com/bzB1E.png)
attribute table - Extracting part of string from field in QGIS Field Calculator? - Geographic Information Systems Stack Exchange
If a string measures 92cm in length, as a mass 3.4G and if we subject it to a tension of 520N assuming the length of the guitar string which vibrates is 63cm.
![Stringtelligence by Thomastik-Infeld: vibrating string length and string tension | Focus | The Strad Stringtelligence by Thomastik-Infeld: vibrating string length and string tension | Focus | The Strad](https://dnan0fzjxntrj.cloudfront.net/Pictures/480xany/3/4/3/14343_pic3_taylorformular_15343.png)