Is there a reason why we excluded the shear stress from this question completely? We solved for Ry but didn't get to use it regarding the sum of forces. ( normal stress + bending stress, excluded shearing stress)
Yes, the moment is negative internally as it causes tension on the top and compression on the bottom. Since it's drawn that way in the FBD, the sign when solved is +, showing the assumed direction (negative moment) is correct. This is definitely a confusing topic. It's the difference between the FBD sign convention versus internal moment sign convention. Does that help?
You're a great tutor! Your explanation is so clear and fruitful. You remind me of Sal Khan from Khan Academy. :)
just love your explanation thanks for the help👍👍
Great work Sir
Thank you for your presentation.
you sound like morty from rick and morty :) your explanation is so clear also
Is there a reason why we excluded the shear stress from this question completely? We solved for Ry but didn't get to use it regarding the sum of forces. ( normal stress + bending stress, excluded shearing stress)
You Sir are a legend keep doing what u doing 🔂🙏🏽🔥🏆
Thanks! I hope the information helps :)
The moment caused by the force of 30 N is negative.
Yes, the moment is negative internally as it causes tension on the top and compression on the bottom. Since it's drawn that way in the FBD, the sign when solved is +, showing the assumed direction (negative moment) is correct. This is definitely a confusing topic. It's the difference between the FBD sign convention versus internal moment sign convention. Does that help?