Question: A wooden beam, dressed size 6 by 8 in and 12 ft long, supported at the ends, carries a load of 2000 lb at the middle of the span.
a. What is the unit shearing stress at the neutral axis?
b. What is the unit shearing stress at a point 3 ft from the end and 2 in from the neutral axis?
c. What is the maximum bending stress in the beam?