exercice de rdm r esistance d es m at riaux l.
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Exercice de RDM ( R esistance D es M atériaux). Un tracto-pelle de 8 tonnes circule sur sa remorque . Le bras du tracto-pelle est en acier trempé C35 Cr Mo 4 Un pont en béton armé passe au dessus de cette route.

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Un tracto-pelle de 8 tonnes circule sur sa remorque .Le bras du tracto-pelle est en acier trempé C35 Cr Mo 4Un pont en béton armé passe au dessus de cette route.

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Quand le bras du tracto-pelle rencontre le pont, à quelle vitesse doitrouler la remorque pour couper le pont en deux ?

P.S. : On ne prendra aucune approximation sur un éventuel freinage du chauffeur !