I've learned that if you "lay down" force to the angle (close the angle) that's when it's cos and when you "stand up" force (to 90 degrees) it's sin. It was easy for me to remember this that way :)
I appreciate the clarification. Before taking my exam, our instructor posted some example problems for us to do. In the multiple choice two of the answers was dependent upon whether you used cosine or sine, so this is very important that a person gets this right.
Agreed. I always struggled with some of these and mixed up which should be sin and cos several times. Unfortunately my professor never told us how to know the difference.
Truly SPEAKING your VIDEO has made me go Very EASE with Physics....SPECIALLY with this F.B.D concept....Really LOOKING forward to Subscribe YOUR videos....THANK YOU SO MUCH MR.Matt Anderson......
I was having difficulties in Statics with figuring out which trig function (sin, cos, tan) to use when breaking forces down into their x and y components, but with that quick little revisit to trig (which I had a shaky foundation on from High School) really helped me out. I was getting confused as to why components of force in the X had sine in them but now I see it just comes down to basic trig.
VIEWER BRO, Excellent! Great to hear. Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A
Actually all these years i simply put theta wherever i like it and most of the time that was right.This is the first time someone taught me how to guess it and make it correct.THANK YOU
Thank you for engaging my utmost attention and for producing this work. You've enlightened me in numerous ways and foremost is probably the part about taking the limit of theta. I can now see were one to stand a wet wooden beam measuring, 16ft x 4in x 4in, on its end and then lean it slightly against a wall and the using your setup I can calculate how much force is pushing against this wall. Correct me if I'm wrong please. If I perform a press handstand and walk up a wall using the wall to support my balance, it's evident to me much of the mg will be passing through my fingers but a percentage of my body's mg will be transferred to the wall. If theta is close to zero then a good 99% of the total mg is going go through my hands to the ground. I've never had pointed out to me the idea of reducing the subject under analysis to a dot. Brilliant.
sir,your explanation is awesome, i could able to clear one of the toughest exam for medical entrance in INDIA. I am very much indebted for u. THANX A LOT PROF!!!!!
This is ridiculously helpful! So is it fair to assume that (in an inclined slope problem) the vector opposing the Normal force will always be the cos(theta) component?
sir so that means that the mgsin theta we found is in the direction of x+ axis that's why its the same as the point of FBD of the body .I mean that we haven't yet found on the plane but on a line parallel to it. Sir thanks for the video and i hope you will clear my doubt soon.
Can someone explain what he's writing on? I've always assumed it must be some kind of clear window but you would think the writing would appear backwards? I'm so curious to figure this out
Rohan Sakhare, Excellent! Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A
I watched whole video and I understood but Can I aplly this theory to solve Normal and Axial Forces eqs relating pressure & shear stress on an airfoil following to integrate it over the whole surface of the airfoil?
Thank you my guy Anderson Awesome 😮😮😮you are writing backwards.mm. I am studying in Aakash institute. Soon we will meet it again One of my great blessing teacher
Nice video. I have a question based on this video. If a block is at rest on the incline plane at an angle of 30 degrees, would the maximum frictional force that would allow the block to stay in place be calculated using 30 degrees, OR would we have to find the minimum angle of the incline plane needed for the block to slide before we can determine the maximum frictional force? That is, find that minimum angle and then substitute it in the formula for fs(max) = UsMgcos (minimum angle needed for block to slide)?
Because normal force of a stationary object on an incline ends up being m*g*cos(theta), and the lateral component of the gravitational force attempting to make it slide is m*g*sin(theta), you'll notice that both trig functions appear here. At the critical angle where sliding initiates, m*g*sin(theta) = mu_s*m*g*cos(theta). Values of m and g both cancel, and we are left with mu_s = tan(theta), relating the static friction coefficient to the critical incline angle. Doesn't matter how much mass the object has, doesn't matter whether we do this experiment on Earth or the moon. A full crate and an otherwise-identical empty crate, will have the same critical angle on the same incline surface.
Waqar Yazdan Shaik, I'm sure my wife would disagree, but thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A
Once you have found the Theta angle, the rest follows suit. As the professor says, just go creative, check it out, mistake yes, mistake not, and you will conclude into the right understanding. Creativity, in this case, cannot go wrong but help to find the right angle and the corresponding sinus and cosine.
I'm fascinated by the board marker
Pretty cool, eh? www.learning.glass
Cheers,
Dr. A
@@yoprofmatt h
Yes board maker is really cool
God damn it, Jorge. Get it together.
+ChrisKeaten Seriously, Jorge! Come on!
Wait, who's Jorge?
Cheers, Dr. A
Horhe, get your head in the game man!!!
feels bad man
I was struggling for hours in tutoring and this made that concept so much easier. Thank you!
same here
I've learned that if you "lay down" force to the angle (close the angle) that's when it's cos and when you "stand up" force (to 90 degrees) it's sin. It was easy for me to remember this that way :)
Thanks sir .iam preparing for JEE MAINS and had problems in taking component your lectures are like ASMR really helps us . LOVE FROM INDIA 🇮🇳 ♥️ ❤️
Same here lol , he gave a nice explaination to check if we are right😌
Yup me too
Thank you so much! You explain this topic so eloquently! The idea of taking the limit as sine theta and cosine theta go to zero is really helpful.
I appreciate the clarification. Before taking my exam, our instructor posted some example problems for us to do. In the multiple choice two of the answers was dependent upon whether you used cosine or sine, so this is very important that a person gets this right.
I agree. This is definitely something that trips up students regularly.
Thanks for the feedback, and keep up with the physics!
Cheers,
Dr. A
thanks a whole ton sir
id been struggling with fbd but with you everything just falls into its place
thank u sooo much
The best way anyone has ever explained me and after searching a lot i got this.
YOU MADE IT CRYSTALL CLEAR ✨ PROFESSOR.....THANK U🇮🇳❤️
Thank you so much! This helped me tremendously before my exam. Great explanation!
These are awesome explanations. They really solidify concepts that aren't always intuitive.
Infinity,
Thanks. They were not always very intuitive to me either. Keep up with the physics and you'll get there.
Cheers,
Dr. A
Agreed. I always struggled with some of these and mixed up which should be sin and cos several times. Unfortunately my professor never told us how to know the difference.
Truly SPEAKING your VIDEO has made me go Very EASE with Physics....SPECIALLY with this F.B.D concept....Really LOOKING forward to Subscribe YOUR videos....THANK YOU SO MUCH MR.Matt Anderson......
I was having difficulties in Statics with figuring out which trig function (sin, cos, tan) to use when breaking forces down into their x and y components, but with that quick little revisit to trig (which I had a shaky foundation on from High School) really helped me out. I was getting confused as to why components of force in the X had sine in them but now I see it just comes down to basic trig.
VIEWER BRO,
Excellent! Great to hear.
Thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
Best explanation i have seen of this. Thank you so much!
Glad to hear it. And congrats on having the best TH-cam handle I have seen. Simply awesome sauce.
Cheers,
Dr. A
a super helpful and unique way to explain how to decide between the sin and cos vector of a force. thank you so much this channel is a lifesaver!
thanks sir that cos and sin problem was a real headache .......thanks for sorting that out
Sir, you were really amazing! This really helped me a lot!
i wish i found that sooner. this is such a great way to determine whether its sin or cos.
Thanks. I like it too.
Cheers,
Dr. A
Actually all these years i simply put theta wherever i like it and most of the time that was right.This is the first time someone taught me how to guess it and make it correct.THANK YOU
Diana Michael,
You're very welcome. Glad you're enjoying the videos.
You might also like my new site: www.universityphysics.education
Cheers,
Dr. A
thanks sir. BTW, The way you explain.. is awesome
Thank you for engaging my utmost attention and for producing this work. You've enlightened me in numerous ways and foremost is probably the part about taking the limit of theta. I can now see were one to stand a wet wooden beam measuring, 16ft x 4in x 4in, on its end and then lean it slightly against a wall and the using your setup I can calculate how much force is pushing against this wall.
Correct me if I'm wrong please. If I perform a press handstand and walk up a wall using the wall to support my balance, it's evident to me much of the mg will be passing through my fingers but a percentage of my body's mg will be transferred to the wall. If theta is close to zero then a good 99% of the total mg is going go through my hands to the ground.
I've never had pointed out to me the idea of reducing the subject under analysis to a dot. Brilliant.
You are correct. And thanks for the feedback.
Cheers,
Dr. A
Is I'm only one who is watching this in class 11th
Great video sir... Love from India
Excellent sir. This helps a lot . Thank you very much 😄
I realised this guy has to write backwards in these lessons. wth
Thats just inverted
Smart board.
@51_Sayan Bose_1101 then how are the students understanding? inverter glasses?
@@namelesss8226 when Jorge said at 1:19 up and to your (profs) left, the prof went up and to his right. This implies the vids inverted
😢😢😢😢
sir,your explanation is awesome, i could able to clear one of the toughest exam for medical entrance in INDIA. I am very much indebted for u. THANX A LOT PROF!!!!!
+konda babu
Glad to hear it. Let me know what sort of medical professional you want to become.
Cheers from the USA to India!
Dr. A
Sir right now iam pursuing MBBS, iam interested in doing MD(general medicine). thank u so much for u u reply sir.
Concert
Thank you for this! Very helpful.
Thank you so much Professor at last I understood how to find trig components.
I felt like Tom Cruise was teaching me 😃
oh my god ur a blessing sir. Thanks for the tutorial
Ajay,
Thanks for the kudos. Keep up with the physics!
Cheers,
Dr. A
Dr. Anderson,
Thank you for the great explanation. I am studying for the OAT and this was very helpful!
Yubi
the exact one i needed!
This is simply amazing!!!Thanksss
Thank you for a wonderful explanation .sir
Thank God for this I knew something was wrong how would I know which theta to take for really tough examples but this limit way made it way easier
Awesome, glad to hear it.
Cheers,
Dr. A
well,nice,slowlecture which make us to clear concept , from pakistan
Wow wow the way he explain is fantastic 🥺🥺🥺😮😮
Hii sir i am from India thanku for making concept clear
Thank you sir
I am from India prepering for JEE ADVANCED
IT HELPS ME ALOT
*LOT'S OF LOVE FROM INDIA*
Big shout out to my Fandersons in India! Good luck on the JEE. I've heard that test is very challenging.
Cheers,
Dr. A
What a glass board i loved it ❤❤
1 Million subscribers soon..
A simple THANKS will not pay your help to me so there is a like for your fantastic way of teaching
Nikhil Tripathi,
You're very welcome. Glad you're enjoying the videos.
You might also like my new site: www.universityphysics.education
Cheers,
Dr. A
Thank you for this 🙏🏻
Thank you so much sir it helped me a lot and thanks a lot again.
That board attracted my attention not gonna lie 🤩
Thank you sir it has solved my physics problem
Amazing sir.....
PATRICK,
Thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
Amazing, thank you.
The Limit trick is wonderful...much better than doing geometry to figure out which is theta.
Yep, I like it. Taking limits is, in general, a good way to determine if you've done something wrong.
Cheers,
Dr. A
Hi Benedict Cumberbatch (Dr. Strange)😜😜😜😜
🤣🤣🤣
I thought the same and searched it on google twice bruh😂😂
i thought the same 😂😂
Sir you are genius
This is ridiculously helpful! So is it fair to assume that (in an inclined slope problem) the vector opposing the Normal force will always be the cos(theta) component?
You need to consider exactly how you've defined theta, and determine the trig terms accordingly. It isn't guaranteed to be the same each time.
what is the setup for this really cool effect of writing on a glass screen with a white marker?
thanks in anticipation.
total internal reflection in glass. when something touches the glass light leaks out from there
Thank you professor M. A
wow ur technique is so cool
Hearng CR,
Thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
Thank you Professor Strange
It is better to use head to tail triangle. The direction will be retained and easily find the force
sir so that means that the mgsin theta we found is in the direction of x+ axis that's why its the same as the point of FBD of the body .I mean that we haven't yet found on the plane but on a line parallel to it. Sir thanks for the video and i hope you will clear my doubt soon.
love from india.....
Thanks from India
Wow. That is an incredible skill to be able to write backwards
simply awesome
It is very hard the way u are writing
Who else has come to see this black board hand writing #backwards
*sir u explain very nicely*
Thank you so much. Sir....Selam from Turkey...
You're very welcome.
Cheers,
Dr. A
FINALLY GODDAMIT THANK YOU
Lots of love from India neet aspirants
From India......😊😊
thank you master.
it helped me
You are welcome young padawan.
Cheers,
Dr. A
Thank u sir!!!
Thankyou so much
Extremely fantastic
Extremely thankful for watching.
Cheers,
Dr. A
Omg nice teaching
Ravi Gill,
Thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
땡큐 땡큐 센세
Thankyou.... Sir.
Thank you so much
Tq prof ❤
Bruh, how you writing like the devil?
lol kidding, great vid. Thank you!
The devil knows physics? Well yeah, certainly knows thermo.
Cheers,
Dr. A
Matt Anderson I need help with thermodynamics
He's writing nice no problems
Can someone explain what he's writing on? I've always assumed it must be some kind of clear window but you would think the writing would appear backwards? I'm so curious to figure this out
Wouldn't their be a 4th force in opposition to the down force according to Newton's 3rd law?
nicely explained
after all these l finally understood
Rohan Sakhare,
Excellent!
Thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
I watched whole video and I understood but Can I aplly this theory to solve Normal and Axial Forces eqs relating pressure & shear stress on an airfoil following to integrate it over the whole surface of the airfoil?
the marker squeak soothes me
Thank you my guy Anderson
Awesome 😮😮😮you are writing backwards.mm. I am studying in Aakash institute.
Soon we will meet it again
One of my great blessing teacher
Yokesh Babu,
Great comment, thanks.
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
Thanks u sir. Ur blessings
Thanks! Keep up with the physics.
Cheers,
Dr. A
Okay we have to solve a whole problem in one minute and only resolution will require 2 minutes
- every neet aspirant
Jorge!
Nice video. I have a question based on this video. If a block is at rest on the incline plane at an angle of 30 degrees, would the maximum frictional force that would allow the block to stay in place be calculated using 30 degrees, OR would we have to find the minimum angle of the incline plane needed for the block to slide before we can determine the maximum frictional force? That is, find that minimum angle and then substitute it in the formula for fs(max) = UsMgcos (minimum angle needed for block to slide)?
Because normal force of a stationary object on an incline ends up being m*g*cos(theta), and the lateral component of the gravitational force attempting to make it slide is m*g*sin(theta), you'll notice that both trig functions appear here. At the critical angle where sliding initiates, m*g*sin(theta) = mu_s*m*g*cos(theta). Values of m and g both cancel, and we are left with mu_s = tan(theta), relating the static friction coefficient to the critical incline angle. Doesn't matter how much mass the object has, doesn't matter whether we do this experiment on Earth or the moon. A full crate and an otherwise-identical empty crate, will have the same critical angle on the same incline surface.
My physics professors NEVER showed us how to determine which is which.
Sorry to hear that. This is a tricky one, but quite useful.
Cheers,
Dr. A
he looks like the guy who knows the equation of time travel but stuck in past , with students who are stuck with geometry
You are total amazing man
Hey devil lol
Waqar Yazdan Shaik,
I'm sure my wife would disagree, but thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
Once you have found the Theta angle, the rest follows suit. As the professor says, just go creative, check it out, mistake yes, mistake not, and you will conclude into the right understanding. Creativity, in this case, cannot go wrong but help to find the right angle and the corresponding sinus and cosine.
Pain et Cirque,
Great comment, thanks. You're making me think!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
THANK U SIR...
Hats off
His expressions are killing 😱
Do you have a video on proving which one is theta. I'd really appreciate
Joseph Zimba,
Yes. on my new website: www.universityphysics.education
Cheers,
Dr. A
Sir, is there any way (Math theorem), where we can decide where to take the angle θ? Please do me a reply.
they don't actually write backwards... they write facing themselves but they flipped the video horizontally during editing.
cause i'm sure he is not a leftie
Look closely for my wedding ring.
Cheers,
Dr. A
ohh. well, impressive then. Thank you for the video by the way sir.
You are welcome. Keep up with the physics.
Cheers,
Dr. A
Ok, they flipped the video during editing but what about the students in the class ?
i love that pen
tq very much sir
yw
Dr. A
ese jorge poniendome mas nerviosa que el mismo