Holonomic constraints.
Constraints are said to be holonomic if constraints imposed on the motion of the system can be expressed in the form of mathematical equation f(r1,r2,.....,rn,t)=0. where r1,r2,.....,rn are position vector of system of particles & 't' is time. Example of holonomic constraints ★The constraints involved in the motion of rigid bodies in which the distance between two particular points is always fixed. ★The constraints involved when a particle is restricted to move along a curve of surface are holonomic.