a) Write down the principles of strength; b) Define stress. c) What kind of cross-sectional effects occur in the plane b

[answerhappygod]

a) Write down the principles of strength; b) Define
stress.
c) What kind of cross-sectional effects occur in the plane bar. In
the right section, show the positive section effects on the
figure.
d) Define the principal directions and principal moments of inertia
for a planar area.
e) Describe the neutral axis (zero axis) in simple bending.
.......
For a member of a structure with a steel carrier system that is
subject to bending effects only;
i) have symmetry in two perpendicular directions passing through
the center of gravity,
ii) The moment of inertia Ix is approximately twice the moment of
inertia Iy,
a) design a cross section,
b) Calculate the moments of inertia Ix and Iy,
c) Explain why you prefer this section type.
Please Type using the keyboard I just need a short answer
thanks