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Five bar linkage

by marellasunny
Tags: mechanics
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Feb5-13, 10:36 PM
P: 226
I use Gruebler's criterion to come-up with 2 dof's for a 5 bar linkage.This astonishes me,especially after seeing an example of a five bar linkage-a manual hand-held grass cutter/hand-held pliers(spring loaded),its on MIT freeware.

Why do we need to input 2 variables for this system to work?

Can someone explain as to why there are 5 links in a spring-loaded plier?ergonomics?how?
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