for Q=Ay , i gt A= (b)(0.5h - y) , y = y , so Q = (b)(0.5h - y)(y) , eventually , i gt
τ = (V)(Q)/ (I)(b)
= (V)(b)(0.5h - y)(y) / Ib
= (V)(0.5h - y)(y) / I
which is different with the author 's working , am i wrong ...
Homework Statement
where
V = total shear force at the location in question;
Q = statical moment of area;
t = thickness in the material perpendicular to the shear;
I = Moment of Inertia of the entire cross sectional area.
based on this formula , the shear stress is max at the neutral axis of...