Degrees of Freedom
An unconstrained rigid body moving in space can describe the following independent motion:
a. Translational motion along any three mutually perpendicular axes x, y and z.
b. Rotational motion about these axes
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| Degrees of Freedom |
A rigid body possesses six degrees of freedom.
Degrees of freedom of a pair is defined as the number of independent relative motions, both translational and rotational, a pair can have.
DOF = 6 – Number of Restraints