What are the static and dynamic coefficients of friction between human barefoot and dry sand ?

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Emmanuelle Cugy

Bonjour,

Je n'ai pas la réponse, mais peut-être que l'équipe de Dawson l'aura. Il travaille sur l'entraînement pour les compétitions de Sauvetage/Secourisme.

Bonne journée.

http://www.ncbi.nlm.nih.gov/pubmed/15815938

Jerry P. Czarnecki

Take a very long board (very rough surface), cover it with sand. Have a person stand or squat on it. Have two strong men raise one ond of the board. Keep raising that end of the board. When the feet START sliding, measure the boad's angle - its tangent in the static friction coefficient. Let that person keeps sliding down, slowly lower the board until the sliding stops; that tangent is the dynamic coefficient.