thanks brother really helped alot My teacher made 1 hour lecture on it and i still couldn't understand anything after that lecture you cleared everything in just few mins
In the example problem, only the shear stress between the topmost plank and the one beneath it were shown (which was 8.15 MPa). Calculating the other glued parts: Shear Stress between 2nd topmost plank and the one beneath it = 8.97 MPa Shear Stress between 3rd topmost plank and the one beneath it = 7.61 MPa If my calculations are correct, it shows that the most critical area was the glued part between the 2nd topmost plank and the one beneath it (since 8.97 MPa is the highest among the three). Although the answer will still stay the same (that the glue will still hold), it's important to note that the critical area might not always be at the topmost boundary depending on the cross-section area. ^I'd appreciate if you would verify my understanding of the problem. Thank you for the lectures!
Can you kindly make a tutorial video about how you create these lecture videoes? (Including what application you use for writing, for audio and video recording and also) Btw your lectures are really awesome 💙
Hi, my best bet is that he uses Microsoft Whiteboard (or some kind of equivalent software) for the writing part. It is either done on a Surface tablet or on a regular computer with a graphics tablet. Then, any kind of screen recording software could be used to capture the screen in real time (there are a lot of good options here but OBS is a powerful and free one with lots of tutorials online). Since the screen recording is sped up, the audio must be recorded separately with Audacity for example (free and really easy to use). Lastly, everything is combined in a video editing software and exported for RU-vid. Davinci Resolve is a really powerful video editor even in its free version and there are a lot of good tutorials on youtube. While I can't be 100% sure about the software he uses, I'm confindent you could achieve the same result yourself and for free with all the software I mentionned. Good luck !
did you need to use the parallel axis thm or can you also find inertia normally by adding up the 1/12(b)(h^3) for each section? (and if you cant how do you know when you have to use the parallel axis thm?)
You can split the geometry into vertical rectangles and not have to use the parallel axis theorem. You know the parallel axis theorem has to be used when you cannot split the cross-section area geometry into shapes that ALL have their centroids on the same axis as the neutral axis.
