Undetermined Multipliers

Another way to use an equation of holonomic constraint to reduce the degrees of freedom of a system rather than simply performing a substitution using the equation of constraint. Is used to find the forces of constraint

Notes

• Requires constraints to be expressed in terms of generalized velocities
• E.g.: $\sum _i{A}_i\dot{x_i}+B=0,i=1,2,3$