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If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by | |
A. | m + r + 2j [Wrong Answer] |
B. | m - r + 2j [Wrong Answer] |
C. | m + r - 2j [Correct Answer] |
D. | m + r - 3j [Wrong Answer] |