Calculate Stress in "Y" Direction: σ=P/A Equation

[Xenix]

1. I need to know the stress σ in the "y" direction.



2. I will use σ=P/A equation.



3. First (-2*10^6)N*0.4m=-0.8*10^6N
Then σ=P/A=(-0.8*10^6N)/(0.4m*0.02m)=-100*10^6Pa.

Is this corrects?

 

[paisiello2]

Looks right to me.

Some suggestions:
-always carry the units through correctly to make sure you are doing it right; I think the first step you did missed the N/m
-you probably don't need to convert everything to N and use *10^6 everywhere; it saves some time and probably less mistakes just to leave the M in there to the end;
-a shortcut here is to just divide the distributed load by the width since a distributed load is sort of like the stress already in one dimension