Stress Resultants (Example 1) - Mechanics of Materials

[@AminDavid-i9l]

Keep up the fantastic work.👏👏

[@AtenaKhaleghian]

Good job, keep it up👏🏼

[@SarahGilmour-dz3it]

Why is M negative?

[@CivilEng_Amir]

If you look at figure "a" again, you'll notice that the axial stress is decreasing from C to B and also from D to A. This results in a clockwise moment around the y-axis, which has a negative sign.

[@SarahGilmour-dz3it]

@@CivilEng_Amir I see, that makes sense now. Thank you!

[@CivilEng_Amir]

@@SarahGilmour-dz3it No worries!