Dynamic 816-1 Constraint and their classification 1. Constraints and the equations of constraints All kinds of conditions which limit the motion of a particle or a system of particles are called constraints The equations which express these limiting conditions are called the equations of constraints. For example: A(A,JA B(xB,e) 4(xy) A crankguide A single pendulum in a plane xa+ya x2+y2=.(x2-x1)2+(ya-y)2=12,ya=0 77 §16-1 Constraint and their classification 1. Constraints and the equations of constraints All kinds of conditions which limit the motion of a particle or a system of particles are called constraints. The equations which express these limiting conditions are called the equations of constraints. A single pendulum in a plane . 2 2 2 x + y = l A crankguide , 2 2 2 x y r A + A = ( ) ( ) , 0. 2 2 2 xB − xA + yB − yA = l yB = For example: