constraint
restriction on the freedom of movement of a mechanical system
first class constraint
constraints in a Hamiltonian system whose mutual Poisson brackets vanish
physical restraint
practice of rendering a person harmless or defenseless by constraining their movement
Ideal constraints
Constraints for which the work done by the constraint forces under an arbitrary virtual displacement vanishes
Hamiltonian constraint
from any theory that admits a Hamiltonian formulation
primary constraint
constraint that holds without using the equations of motion