1st option is correct.
In superposition method we take effect of 1 load at a time and then add the effects of all loads to get the final result
Question 32 About using the superposition method to obtain combined stress state from several simple loads...
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Question 28 To combine the plane or 20 stress states as below. 6 MPa 12 MP 4 MPa 10 MPa + 8 MPa if the in-plane principle stresses for the stress state on the left are 10.94 MP and -6.94MP whicho the following slves the principle stresses for the combined stress state -10.94-12-22.94 MPa 6.94-1.06 MPa -10.94-12-22.94 MPa -6.94 +14.94 MPa -10.94+ 12 = 22.94 MPa 6.94 14.94 MPa Because the principle stresses from the stress states may not...