The principle Transmissibility

The principle Transmissible is the equilibrium or motion of a rigid body remains unchanged if a force acting at a given point is replaced by a force of the same magnitude and direction and direction , but acting at different point,provided that the two forces have the same line of action. 

        

           Conditions of equilibrium or motion are not affected by transmitting a force along its line of action.

 

 

System of Units:

3 types.

1. length 

2. mass

3. time 

• Meter(l)-kilogram(m)-second(t) [MKS] these are SI units 

Mechanical systems will be expressed in system international(s.i)