surface
just below the surface
within the core
none of the above.
finishing and polishing
shot-peening
decarburisation
electroplating
a member made of steel will generally be more rigid than a member of equal load-carrying ability made of cast iron
a member made of cast iron will generally be. more rigid than a member of equal load carrying ability made of steel
both will be equally rigid
which one is rigid will depend on several other factors
Young′s modulus
coefficient of elasticity
elastic limit
endurance limit.
low
zero
high
could be anything