Great video of an interesting problem! If you notice in your diagram both the base angles of the lengths triangle are 90- theta/2 but so are the base angles of the forces triangle. Hence the two triangles are similar. This means that mg= T and it also means that kQq/rrmg = r/L. This means that r cubed = kQqL/mg. It also means that the total work has the simple form of 3kQq/2r.
Hi Sir, I watch your videos and found it very helpful. Can you please make a video on Indian physics Olympiad or NSEP and INPHO. recommending books and Strategy as per Indian frame of reference. It can be very useful for Students preparing for PHYSICS OLYMP
this problem was not so difficult. I was able to do by myself. Mostly mathematics was needed to solve this problem. But, enjoyed this problem & your solution a lot. Please, make more videos about physics olympiad.
We have to deal with such questions for the Engineering University Admission in Bangladesh. (Specially for BUET). So somehow this question feels relatively easier, maybe because I am admission candidate and have solved a similar problem before. I haven't participated in a physics olympiad before, so I have no Idea about Olympiad question standard. So pardon my words If I'm incorrect.
this was ez ig by applying lami's theorem between T, F, mg at eqb position we directly get sin(theta/2) and using any trig identity we would get cos(theta) and just had to add up the work done individually of gravity and electrostatic forces Overall the math could be tricky but fundamentally the physics was much simple
it's tricky! My answer is also not really simplified as it is in the mark scheme. I haven't really checked my last few lines of algebra but I imagine it simplifies to the answer shown.
@ammar9234 absolutely, most of my videos are useful for all exam boards, there are some specific AQA things and hence over the next term I'll roll out some specific ones for AQA, Edexcel. Until then the others are definitely useful
very interesting, I've never done a reaction video, I'll have a think, thanks! : ) Tom Rocks Maths has a great video reacting to it in the meanwhile, I recommend it.
@zhelyo_physics Yeah, i have actually watch his reaction of the video it is great, but i think for the analysis part especially you will do the great analysis , cheers for considering it 🙌🏻
Check out all my Physics Olympiad Solutions: ua-cam.com/play/PLSygKZqfTjPCKus_q7vWTaRClR2hi6XFe.html&si=CN0XR3CifhCHE_mv
That was tricky, but Edexcel Physics A Level is more difficult.
Aqa☠️
Great video of an interesting problem! If you notice in your diagram both the base angles of the lengths triangle are 90- theta/2 but so are the base angles of the forces triangle. Hence the two triangles are similar. This means that mg= T and it also means that kQq/rrmg = r/L. This means that r cubed = kQqL/mg. It also means that the total work has the simple form of 3kQq/2r.
The dedication is insane
thank you so much. I feel privileged to be able to share these great problems to an audience, I have a ton of fun going through of them.
Hi Sir, I watch your videos and found it very helpful. Can you please make a video on Indian physics Olympiad or NSEP and INPHO. recommending books and Strategy as per Indian frame of reference. It can be very useful for Students preparing for PHYSICS OLYMP
this problem was not so difficult. I was able to do by myself. Mostly mathematics was needed to solve this problem. But, enjoyed this problem & your solution a lot. Please, make more videos about physics olympiad.
Please Bring a video on Physics Olympiad or Indian Physics Olympiad(if possible)
thank you for the idea.
@zhelyo_physics Please bring it in short time
If the variables you need to have are given, would it be possible to make the task easier with dimentional analysis ??? 😅
that is such an interesting idea, might be tempting to film part 2 : ) Thank you!
We have to deal with such questions for the Engineering University Admission in Bangladesh. (Specially for BUET). So somehow this question feels relatively easier, maybe because I am admission candidate and have solved a similar problem before.
I haven't participated in a physics olympiad before, so I have no Idea about Olympiad question standard. So pardon my words If I'm incorrect.
Can you please make a series for "pathfinder for physics olmpyaid" solutions
purchased your electric fields workbook and enjoyed it.
@RobertssU thank you, glad to hear
this was ez ig by applying lami's theorem between T, F, mg at eqb position we directly get sin(theta/2) and using any trig identity we would get cos(theta) and just had to add up the work done individually of gravity and electrostatic forces
Overall the math could be tricky but fundamentally the physics was much simple
The simplification could have been done in more elegant way, finding sin(theta/2)
thank you! I had a feeling it could be done.
There is a quite similar problem in 200 Puzzling Physics Problems
interesting, I have not encountered this book, but I might check it out! Thanks for the comment.
Think you meant to put (mg)^1/3 rather than mg^1/3 at the end but still great video
thanks for the spot and the comment! : )
its same question came in jee advanced pervious year 2017
Very interesting how similar questions appear in different formats! Thanks for the comment.
Please give lecture in physics syllabus IIT JEE syllabus ,,, then you are become popular in India
I am thinking of doing "An hour of JEE Physics", it's gonna be tricky to prepare, but it will cover some beautiful physics, I am sure.
@@zhelyo_physics pls go for it
Level of jee advanced
it's tricky! My answer is also not really simplified as it is in the mark scheme. I haven't really checked my last few lines of algebra but I imagine it simplifies to the answer shown.
Well! try Pathfinder physics problems you may find it more challenging
Are there videos on this channel that can help me with rotational mechanics?
Absolutely.
Rotational Kinematics covered here: ua-cam.com/video/U8bx75wc2Zo/v-deo.htmlsi=8QawSqX4g9ktc5XQ
Rotational Dynamics covered here: ua-cam.com/video/vdzaWYDGKVE/v-deo.htmlsi=8j1gs2QTnkv2PjFy
Hi sir I wanted to ask if your videos that are not labelled aqa are still useful as I want to revise the quantum phenomena
@ammar9234 absolutely, most of my videos are useful for all exam boards, there are some specific AQA things and hence over the next term I'll roll out some specific ones for AQA, Edexcel. Until then the others are definitely useful
nice video mate
thank you very much!
Is it the hardest? It seems dummy level to me.
question link?
added to the description : ) thanks for the comment!
Hey Zphysics i know it is a little bit late about a year but, you should do reaction on Animation vs Physics and i would love to see the analysis 👍😀
very interesting, I've never done a reaction video, I'll have a think, thanks! : ) Tom Rocks Maths has a great video reacting to it in the meanwhile, I recommend it.
@zhelyo_physics Yeah, i have actually watch his reaction of the video it is great, but i think for the analysis part especially you will do the great analysis , cheers for considering it 🙌🏻