double GetForces(int idx) const {return vTotalForces(idx);}
/** Retrieves the total moment resulting from the forces defined in the external reactions.
@return the total moment in foot-pounds.
*/
double GetForces(int idx) const {return vTotalForces(idx);}
/** Retrieves the total moment resulting from the forces defined in the external reactions.
@return the total moment in foot-pounds.
*/