![Typical schematics of drill string whirling vibration in a vertical... | Download Scientific Diagram Typical schematics of drill string whirling vibration in a vertical... | Download Scientific Diagram](https://www.researchgate.net/publication/345451377/figure/fig1/AS:955338568249344@1604781872572/Typical-schematics-of-drill-string-whirling-vibration-in-a-vertical-well-a-Drill.png)
Typical schematics of drill string whirling vibration in a vertical... | Download Scientific Diagram
![Applied Sciences | Free Full-Text | H∞ Iterative Learning Boundary Vibration Control of Uncertain Vibrating String with Iteration-Varying Distributed Disturbance and Boundary Disturbance | HTML Applied Sciences | Free Full-Text | H∞ Iterative Learning Boundary Vibration Control of Uncertain Vibrating String with Iteration-Varying Distributed Disturbance and Boundary Disturbance | HTML](https://www.mdpi.com/applsci/applsci-09-05122/article_deploy/html/images/applsci-09-05122-g013.png)
Applied Sciences | Free Full-Text | H∞ Iterative Learning Boundary Vibration Control of Uncertain Vibrating String with Iteration-Varying Distributed Disturbance and Boundary Disturbance | HTML
![The frequency of vibration of a string depends on the length L between the nodes, the tension F in the string and its mass per unit length m . Guess the expression The frequency of vibration of a string depends on the length L between the nodes, the tension F in the string and its mass per unit length m . Guess the expression](https://haygot.s3.amazonaws.com/questions/1328182_1111038_ans_4ed46ac645ff49c1add93599554d6776.jpg)