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Kinematic chain:

When a number of kinematic links are joined in such a way that the last link is joined to the first link and the relative between them is a definite. If the motion is not definite then it is called non-kinematic chain.

There are two equations to find out whether the Chain is kinematic or not. These equations are applicable for the chains having lower pairs.

The equations are.

l = 2p – 4

l = 2/3 (j + 2)

Where l is number of links, p is number of pairs and j is number of joints.

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