Mechanical systems:

Mechanical system are concerned with the behavior of matter under the action of forces.
    Mechanical systems are categorized as

• Rigid-body
• deformable body
• fluid system  

Rigid body system: A rigid body system assumes all bodies and connections in the system to perfectly rigid

Deformation: The actual systems are not rigid, some deformation always results as various load are applied.

                 Normally the deformation are small and do not appreciably affects the motion of                      the rigid body system .

 

Fluid system: The field of mechanics consists of compressible and incompressible fluids. An important subcategory of incompressible fluids is hydraulics, which is study of the forces,energy and pressure of liquid in motion. 

 

In mechanical systems few laws will come

1. Newtonian mechanics
2. Newton 1st law
3.  Newton 2nd law
4. Newton 3rd law
5. Newtons law of gravity
6. Parallelogram law for the addition of forces