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chetzread
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Homework Statement
in the formula of shear stress τ = (V)(Q) / It ,
Q=Ay = first moment of inertia of area, the area can be located above(or bottom) at the point of interest)
when the chosen point is at the wall(boundary) , why shear stress = 0?
Homework Equations
The Attempt at a Solution
When i choose area above the point of interest, there's nothing above A, so i understand that Q=0, shear stress = 0
But, when I choose the area below the point of interest, it's the whole coloured part, right? how can Q= 0 ?
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