Question

A rectangular beam of width 100 mm & depth 200 mm is subjected to an axial force of 750 kN and a bending moment of 300 kN m. Find the total stress at a point 60 mm above the centroid of the sectio

Answer 1

I think first you have to clear two things.

1)Where the axial force is acting on the beam span ?
2)How can we get 300 knm bending moment without knowing wheare the force is acting? clear it. and calculate using..

We have a relation M/I = F/Y= E/R.

I=Moment of inertia about neutral axis = [b*(d^3)]/12