Given:
A rectangular beam with breadth b = 25 mm and height h = 50 mm is subjected to both a distributed load of w = 4.0 N/mm and a point load of P = 500 N. The length of the beam is 2 m.

Req'd:
Determine the bending moment due only to the point load at the middle of the span M_{P} .

Sol'n: The bending moment at the mid-span due to the point load is: