1Let $=length of shortest link L=length of longest ink P=length of one remaining ink Q=length of other remaining ink Then if S+L<=p+Q the linkage is grashof and at least one link will capable of making a full revolution with respect to the ground plane. otherwise, the linkage is non-grashof and no link will be capable of a complete revolution relative to any other link 2)The Grashof condition are independent from the order of the s, l pQwhen the mechanism is assembled1) Let S=length of shortest link L=length of longest link P= length of one remaining link Q= length of other remaining link Then if S+L<=P+Q, the linkage is Grashof and at least one link will capable of making a full revolution with respect to the ground plane. Otherwise, the linkage is non-Grashof and no link will be capable of a complete revolution relative to any other link. 2) The Grashof condition are independent from the order of the S,L,P,Q when the mechanism is assembled