### What is Shear Force and bending Moment

Shear Force and bending Moment Shear force: Resistance to keep beam in equilibrium against external transverse loads. Shear force at any section is equal to the sum of transverse loads either to the right-hand side or left-hand sight of the section. Bending moment: Bending moment at any section is equal to sum of moments either to the right-hand side or left-hand side of the section. Shea r force diagram (SFD): A graphical representation of vertical (or) transverse forces along the length of a beam. Sign convention for shear force and bending moment at a section: