Dynarnics 2. Classification of constraints By their forms and characters constraints can be classified to into different types as follows (1) Geometrical constraints and constraints of motion Conditions which limit the geometric position in space of a particle or of a system of particles are called geometrical constraints Examples are, the limiting conditions shown in the cases given above Conditions which limit the motion of a particle or of a system of particles are called constraints of motion An example is the pure rolling of wheels along a tangent track9 By their forms and characters constraints can be classified to into different types as follows 2. Classification of constraints (1) Geometrical constraints and constraints of motion Conditions which limit the geometric position in space of a particle or of a system of particles are called geometrical constraints. Examples are, the limiting conditions shown in the cases given above. Conditions which limit the motion of a particle or of a system of particles are called constraints of motion. An example is, the pure rolling of wheels along a tangent track