The degree of static indeterminacy, Ns, and the degree of

The degree of static indeterminacy, N_s, and the degree of kinematic indeterminacy, N_k, for the plane frame shown below, assuming axial deformations to be negligible, are given by

1. N_s = 6 and N_k = 11
2. N_s = 6 and N_k = 6
3. N_s = 4 and N_k = 6
4. N_s = 4 and N_k = 4

N_S = D_SE + D_SI
D_SE = 7 – 3 = 4
D_SI = 0
∴ N_S = 4
N_k = 3 + 3 + 3 + 0 + 1 + 1 = 11
When we assume negligible axial deformation,
N_k = 11 – 5 = 6