Question $1-5$

Two $20100-mm$ and two $20180-mm$ boards are glued together as shown to form a $120200-mm$ box beam. Knowing that the beam is subjected to a vertical shear of $3\mathrm{.}5kN.$

Determine the moment of inertia $1?$

D$)53\mathrm{.}693m^4$

E$)55\mathrm{.}693m^4$

A$)59\mathrm{.}293m^4$

B$)52\mathrm{.}693m^4$

C$)56\mathrm{.}693m^4$

Determine the first moment $Q_A?$

D$)125{10}^{-6}$:${\text{'}}^3$

E$)150{10}^{-6}{m}^3$

A$)441{10}^{-6}{m}^3$

B$)414{10}^{-6}{m}^3$

C$)164{10}^{-6}{m}^2$

Determine the average shearing stress in the glued joint at $A?$

D$)239$KPa

E$)332$KPa

A$)329$KPa

B$)293$KPa

C$)299$KPa

Determine the first moment $Q{a}_2?$

A$)216{10}^{-6}{m}^3$

B$)126{10}^{-6}{m}^3$

C$)261{10}^{-6}{m}^3$

D$)621{10}^{-6}{m}^3$

E$)612{10}^{-6}{m}^3$

Determine the average shearing stress in the glued joint at $B?$

A$)953$KPa

B$)539$KPa

C$)395$KPa

D$)935$KPa

E$)359$KPa