Constraints represents an important aspect in control systems. Constraints are also inherent partof anydynamical system. Mathematical and graphical representations of constraints are common in literature. A realphenomenon of walk from chair to door and opening of door is considered and graphically represented in thisarticle. Further a simple experiment is conductedto carry weight by right hand and opening door by left hand.This experiment considers different weights from 1 kg to 23 kg and constraint identification accordingly