Problem 1.
If a steel pipe has outer and inner diameters of 30 mm and 20 mm, respectively.
900 N forces are applied as shown in Figure.
Determine the principal stresses at point A.
200 mm
900 N
200 mm
150 mm
100 mm
900 N
Problem 2.
A beam is constructed from four boards and applied load condition is illustrated in Figure.
Boards are nailed together