Consider the Grubler’s criteria for the planar mechanism as F = 3(n - 1) - 2l - h What does l represent in the above equation?
Number of lower pairs
Number of links
Length of the longest link
Number of mobile links
Number of lower pairs
According to the expression given in question,
F = 3(n - 1) - 2l - h
Where, F = Degree of freedom
h =
Hence, the correct option is (A).
&Key Points:-
Where, link 3 is coupler rod.
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