a) f=[fx,fy]T
b) σ=Dε
c) q‘=lq
d) f=[2|i-j|+1]
Answer: a
Explanation: A body force is a force that acts throughout the volume of the body. Body forces contrast with contact forces or the classical definition of surface forces which are exerted to the surface of the object. Body force is denoted as
f=[fx,fy]T.
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