A pin-jointed plane frame is unstable ifwhere m is number of members, – McqOptions

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1.	A pin-jointed plane frame is unstable ifwhere m is number of members, r is reaction components and j is number of joints
A.	m r = 2j
B.	(m r)<2j
C.	none of the above
D.	(m r)>2j
Answer» C. none of the above

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