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. 2023 Mar 8;13:3910. doi: 10.1038/s41598-023-30401-9

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(a) Schematic of a grass blade representative, rooted at $x_{i}$ , with grass coordinates in green. (b) Forces acting on an infinitesimal, inextensible blade element: tension $T$ , drag per unit length $f_{D}$ , and buoyancy per unit length $f_{B}$ .