1.How to find the moment of inertia of linkage (four bar mechanism), Gear system(having 3 reducers).
consult a book, preferably theory of machines.
Calculate the kinetic energy of the system and factor out the generalized velocity so that you have a form that looks like
T = (1/2) qdot^2 I(q)
where I(q) is the generalized inertia which is a function of the generalized coordinate q that describes the system configuration. Then it is a simple matter to extract the function I(q) from this expression. Note that for the four bar linkage it will be variable, depending on q.
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