Statics 7.71 - Draw the shear and moment diagram for the beam.

[@jingwenzheng8597]

very useful videos, thank you!

[@samosgood901]

So helpful. Wish our professor taught it this way!

[@LearningbyTeaching]

Thank you for the comment. I am glad the video was helpful.

[@crobbie1026]

You sir, are a god for this

[@LearningbyTeaching]

Hi Carrie, I am not but you will be if you keep it up!!

[@Didimirsa]

Thank you 😊

[@LearningbyTeaching]

You are welcome Dianna :)

[@kaankubulus3891]

thx for the clarification

[@LearningbyTeaching]

Happy to help!!

[@bryanandrefranzkib3018]

How to find the negative maximum bending moment

[@LearningbyTeaching]

If I am not mistaken, I would believe for this problem is zero. However, if it is for another problem look at your graph and check which value is the maximum negative value.

[@penny3789]

hi bsce classmates ko sa srb

[@omailods1995]

Classmate

[@erruzrazon5913]

-(600)(1)-(600)(3) ??

[@LearningbyTeaching]

Hello Erruz, there are two forces acting downward in our beam. If we are doing the moment with respect to a point (in this case point A) then the moment each force creates around this one is equal to F*d (force times distance). Therefore, the first force which is equal to 600N times the distance from A which is 1 meter gives the first term of that sum. Then similarly second force = 600N and total distance from A of 3m. Why are they negative? They are negative due to the final rotation direction... I decided that clockwise (CW) is negative, therefore both of the moments created by the 600N forces are negative. I hope this may help you!