Hello Prof. Bom, I am a 57 year old Mech Engineer who is studying for my second attempt at the PE exam. Passed the FE 30 years ago, and then took the PE 5 years back without sufficient prep, due to work schedules. Work life hasn't changed, so I am short on time again. I watch your lessons at 2X speed and you're still remarkably understandable. What digital white board software are you using? I am very grateful for your channel.
@@TheBomPE I recently learned that I did pass the PE Mechanical: Machine Design and Materials at 57 years old and 6 months after Covid hospitalization, and without a prep course. Your videos helped in several ways. While they were very time efficient (esp. at higher playback speeds ;-), clear and comprehensive technical reviews, the positivity of your engagement with the students was also key to the motivation to keep on working. I can't emphasize how much an instructor's compassion, decency, humility, focus, disciple, organization, thoroughness, and accountability all contribute to a student desire/ability to persevere and succeed. Cheers.
I'm glad it helped! Yeah, I'm not a fan of the quarantine either. Oh well. Here are some of my other playlists in case you haven't seen them yet and might be interested: ENGR122 (Statics & Engr Econ Intros): ua-cam.com/play/PL1IHA35xY5H52IKu6TVfFW-BDqAt_aZyg.html ENGR220 (Statics & Mech of Mat): ua-cam.com/play/PL1IHA35xY5H5sjfjibqn_XFFxk3-pFiaX.html MEMT203 (Dynamics): ua-cam.com/play/PL1IHA35xY5H6G64khh8fcNkjVJDGMqrHo.html MEEN361 (Adv. Mech of Mat): ua-cam.com/play/PL1IHA35xY5H5AJpRrM2lkF7Qu2WnbQLvS.html MEEN462 (Machine Design): ua-cam.com/play/PL1IHA35xY5H5KqySx6n09jaJLUukbvJvB.html (MEEN 361 & 462 are taught from Shigley's Mechanical Engineering Design) Thanks for watching!
When you do a free body diagram of the ABC or BDE bodies, why do the forces at location B give you the force and direction acting on pin B instead of the force and direction acting on the hole located at B on the body?
Example The structure connected to ceiling in the in gym is frame not truss? The loading is elevated side walk for walkers, garage door like doors with pulley & motors. basketball hoops.
Newton's 3rd law says that every action has an equal and opposite reaction. That's why the force vectors flip direction between two bodies that are applying force to each other. That's what is done in the example here.
hi teacher, how´s going, i´m here because i have a question , it´s about frames, there´s a problem where i have 3 forces in a pin, so i dont know how to analize, the problem looks like an estructure is shaped like a rhombus , so i have 3 forces in a pin and reactions where they´re not applied in the pin....i dont know how to do that
I had a question. In a frame of equilateral triangle .with ABC points A being left start point and has 100 grms of weight On B side if 100grms of ball is connected with rope How do I lift the ball on A with B . How to reconstruct the Fram
Im sorry for the first example wouldn't the vertical component be sin and the horizontal be cos? Also for the Ra for the Fx equation how did you determine or why'd you plug it in as a negative and for the Fy equation why'd you plug in as a positive? How did you know it was negative and positive instead of flipped because it gives different answers.
Its so hard to not make a mistake with these kinds of problems like I accidently when drawing diagram 2 forgot The applied 6 kn load and it messed up all of my other work. Ive been practicing these problems for a while and sometimes i get it all right but like more than half the time i make some small mistakes. I write down the wrong perpindicular distance or I Add instead of subtract. Its really hard!
Notice how the professor is methodical in doing the problem. He doesn’t rush ,he writes and draws neatly and he double checks. It’s an engineering problem not just a math exercise. So approach it as if people’s’ lives depend on you getting it right. Good luck!
@roobear5357 Yeah I've had more experience now some things I've learned are 1)Don't assume I know how to do a problem or even a step. I find that when I see something that I've seen before I'll immediately start writing stuff down but instead if I act as if I've never seen it I'll be more methodical. And I'll think through it more. This is probably the biggest thing 2) Don't get distracted/forget Sometimes I'll read part of the problem then get distracted trying to figure it out. Or I'll be mid way through a problem and I'll get distracted solving part of it and forget the rest. So I need to not let myself get sidetracked, follow an order and not assume I'm done
Probably the most detailed explanation I could find on UA-cam. He is so clear and careful about the use of his terminology. Awesome :)
Thank you, and thanks for watching!
Hello Prof. Bom, I am a 57 year old Mech Engineer who is studying for my second attempt at the PE exam. Passed the FE 30 years ago, and then took the PE 5 years back without sufficient prep, due to work schedules. Work life hasn't changed, so I am short on time again. I watch your lessons at 2X speed and you're still remarkably understandable. What digital white board software are you using? I am very grateful for your channel.
I'm glad my content is helping! I use Microsoft onenote 2007... the last version before the stupid ribbon bar. Best of luck on your re-take!
@@TheBomPE I recently learned that I did pass the PE Mechanical: Machine Design and Materials at 57 years old and 6 months after Covid hospitalization, and without a prep course. Your videos helped in several ways. While they were very time efficient (esp. at higher playback speeds ;-), clear and comprehensive technical reviews, the positivity of your engagement with the students was also key to the motivation to keep on working. I can't emphasize how much an instructor's compassion, decency, humility, focus, disciple, organization, thoroughness, and accountability all contribute to a student desire/ability to persevere and succeed. Cheers.
@@calanpeet Thanks for your encouragement! Congratulations on passing the PE!
I appreciate your very clear and informative lecture. Hoping you will continue doing more topics about Structural Design. GODBLESS
Thanks for the well-wishes! God has blessed me, and I'm grateful. I'll be posting another lecture very soon!
@@TheBomPE do structural design you are fantastic sir
your color coding is spectacular. I am going to use them in my exams.
Thanks! I'm glad it seems like lit will be useful!
give bro a raise
very informative lecture. Beats my professors 8 minute recordings she sends us. This quarantine sucks!!!
I'm glad it helped! Yeah, I'm not a fan of the quarantine either. Oh well.
Here are some of my other playlists in case you haven't seen them yet and might be interested:
ENGR122 (Statics & Engr Econ Intros): ua-cam.com/play/PL1IHA35xY5H52IKu6TVfFW-BDqAt_aZyg.html
ENGR220 (Statics & Mech of Mat): ua-cam.com/play/PL1IHA35xY5H5sjfjibqn_XFFxk3-pFiaX.html
MEMT203 (Dynamics): ua-cam.com/play/PL1IHA35xY5H6G64khh8fcNkjVJDGMqrHo.html
MEEN361 (Adv. Mech of Mat): ua-cam.com/play/PL1IHA35xY5H5AJpRrM2lkF7Qu2WnbQLvS.html
MEEN462 (Machine Design): ua-cam.com/play/PL1IHA35xY5H5KqySx6n09jaJLUukbvJvB.html
(MEEN 361 & 462 are taught from Shigley's Mechanical Engineering Design)
Thanks for watching!
When you do a free body diagram of the ABC or BDE bodies, why do the forces at location B give you the force and direction acting on pin B instead of the force and direction acting on the hole located at B on the body?
Example
The structure connected to ceiling in the in gym is frame not truss?
The loading is elevated side walk for walkers, garage door like doors with pulley & motors. basketball hoops.
Hello, why is newtons 3rd law not applied to the 50lb force D at 1:27:52? I thought it would be going downward.
Newton's 3rd law says that every action has an equal and opposite reaction. That's why the force vectors flip direction between two bodies that are applying force to each other. That's what is done in the example here.
hi teacher, how´s going, i´m here because i have a question , it´s about frames, there´s a problem where i have 3 forces in a pin, so i dont know how to analize, the problem looks like an estructure is shaped like a rhombus , so i have 3 forces in a pin and reactions where they´re not applied in the pin....i dont know how to do that
I had a question.
In a frame of equilateral triangle .with ABC points
A being left start point and has 100 grms of weight
On B side if 100grms of ball is connected with rope
How do I lift the ball on A with B .
How to reconstruct the Fram
Im sorry for the first example wouldn't the vertical component be sin and the horizontal be cos? Also for the Ra for the Fx equation how did you determine or why'd you plug it in as a negative and for the Fy equation why'd you plug in as a positive? How did you know it was negative and positive instead of flipped because it gives different answers.
What is the text that you've referenced in this video? Thanks in advance
In this course I use Riley Sturges and Morris, Statics and Mechanics of Materials, 2nd edition. Thanks for watching!
Awesome ❤️
I'm glad you liked it! Thanks for watching!
What's the textbook for this course?
I use Riley Sturges and Morris, but there are many good texts in this space.
Its so hard to not make a mistake with these kinds of problems like I accidently when drawing diagram 2 forgot The applied 6 kn load and it messed up all of my other work. Ive been practicing these problems for a while and sometimes i get it all right but like more than half the time i make some small mistakes. I write down the wrong perpindicular distance or I Add instead of subtract. Its really hard!
Notice how the professor is methodical in doing the problem. He doesn’t rush ,he writes and draws neatly and he double checks. It’s an engineering problem not just a math exercise. So approach it as if people’s’ lives depend on you getting it right. Good luck!
@roobear5357 Yeah I've had more experience now some things I've learned are
1)Don't assume I know how to do a problem or even a step.
I find that when I see something that I've seen before I'll immediately start writing stuff down but instead if I act as if I've never seen it I'll be more methodical. And I'll think through it more. This is probably the biggest thing
2) Don't get distracted/forget
Sometimes I'll read part of the problem then get distracted trying to figure it out. Or I'll be mid way through a problem and I'll get distracted solving part of it and forget the rest. So I need to not let myself get sidetracked, follow an order and not assume I'm done
That’s great …that sounds like a productive approach.
God bles you
I'm glad I could help! Thanks for watching!
@@TheBomPE God bless you and your family.
@@calanpeet He has indeed! His blessings to you too!