A rigid-jointed plane frame is stable and statically determinate if - – McqOptions

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1.	A rigid-jointed plane frame is stable and statically determinate if -
A.	(m + r) = 3j
B.	(3m + r) = 3j
C.	(m + 3r) = 3j
D.	(m + r) = 2j
Answer» C. (m + 3r) = 3j

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