Professor♥ My answer was correct But It's Awesome to see your solution every time because it always taught me new way , this time *By taking Examples- make it more interesting* and 07:25 - Yes Professor♥ They are Same.
That was quite simple, really. I got as far as center of mass staying still, but didn't have strong enough SHM to keep it all together and turn it to equations. Interesting problem.
I have a problem seeing how the inductances add in parallel which they need to do for the answer to be correct. The circuit I see is an inductor in series with a capacitor which is in series with an another inductor.
I teach Physics. No Video, but 35 badges, 15 bracelets, 12 necklaces, 15 rings, 7 different pair of glasses (that I wore in my lectures during my 43 years at MIT).
Very interesting. Would you be interested in seeing a different solution? I submitted it to the Physics Teacher before finding this video...much to my chagrin :) In any case, I know you're busy so if you aren't interested I understand. Thank you for sharing your Physics expertise .
nice solution, very clever. There are solution using normalization (did not find a clear explication) or by deriving the solution of the motion equation. This is my favourite, just physical thinking.
Sir why is the thermal expansion directly proportional to the original length . As even if the length is more same amount of energy must lead to same amount of thermal expansion of the body. Please give your opinion. Even in your lecture of themal expansion you drew a straigh line in graph for T vs L of a body. Diffenciating both sides this would mean deltaT directly proportional to delta L. Please explain. Is alpha a function of length!!.
Sir can I use reduced mass concept here?? I get the same answer in a faster way. Is reduced mass concept only confined to atomic physics or can I use it in mechanics too..
Hello professor, the reason I'm contacting you is for a problem I've been working on for day without any compatible result. Your explanation in this video has been some kind of helpful for me, yet I've not succeeded to solve the problem yet. If you could help me with that, it would be very nice of you. Thank you very much. "A spring with the constant K=170 N/m is attached to two masses m=50gr and M=120gr, resting at equilibrium against a wall with mass m in contact with the wall. A ball is thrown toward the mass M. The ball hits mass M with the speed v and sticks to it, making the spring compress to its maximum compression, then extend, then compress again for the second time. If, during the second compression, the velocity of mass m is 1.2 m/s, how much is the compression of spring at this time? Answer in cm."
@@nithin1729s Keep in mind that MIT is only a very mediocre University. That's why only 101 people who studied at MIT or who lectured there received a Nobel Prize. *That's very embarrassing.* Luckily you got a much better education.
I know I am slightly late in this... I used the knowledge gained through 803 lectures. If we take the differential equations for x1 and x2, use Cramer's rule and solve for the determinant=0, we get the same answer.
Since centre of mass must stay still at all moments , the sum of products of mass and distance if both those must be equal, plugging in the value of one position as that SHM eqn, we get the other
Professor♥ My answer was correct But It's Awesome to see your solution every time because it always taught me new way , this time *By taking Examples- make it more interesting* and 07:25 - Yes Professor♥ They are Same.
I solved this through a more complicated considerations but this makes things more understandable
Great sir
That was quite simple, really. I got as far as center of mass staying still, but didn't have strong enough SHM to keep it all together and turn it to equations. Interesting problem.
That was pretty intuitive.
Professor, is there not an electrical analogy solution using a capacitor for the spring and inductors for the masses?
look at the diff eq of free oscillations of LC circuits and see whether there are simelarities.
I have a problem seeing how the inductances add in parallel which they need to do for the answer to be correct. The circuit I see is an inductor in series with a capacitor which is in series with an another inductor.
professor do you explain about this concept in any of your lectures , cause I want to learn about it .
Teacher, what is your best advice when solve Physics problems
my advice is to first learn Physics
congratulations to you sir ,on reaching 200k subscribers!!!!!
ha ha ha you mean 200k
Oops yes sir , 😅
Can you please do a video on your props sir ! , like how many glasses you have , how many badges,bracelets you have that you wear it your lecture !!
I teach Physics. No Video, but 35 badges, 15 bracelets, 12 necklaces, 15 rings, 7 different pair of glasses (that I wore in my lectures during my 43 years at MIT).
OMG , 😮😮😮😮😮, that's awesome sir , thank you for sharing !!!! I'm in a state of high potential (of aweness)
you're de best
wow sir amazing intuitive
nice solution ..thank you.
Very interesting. Would you be interested in seeing a different solution? I submitted it to the Physics Teacher before finding this video...much to my chagrin :)
In any case, I know you're busy so if you aren't interested I understand.
Thank you for sharing your Physics expertise .
nice solution, very clever. There are solution using normalization (did not find a clear explication) or by deriving the solution of the motion equation. This is my favourite, just physical thinking.
Incredible
Sir why is the thermal expansion directly proportional to the original length . As even if the length is more same amount of energy must lead to same amount of thermal expansion of the body. Please give your opinion. Even in your lecture of themal expansion you drew a straigh line in graph for T vs L of a body. Diffenciating both sides this would mean deltaT directly proportional to delta L. Please explain. Is alpha a function of length!!.
take length L1 and length L2. Heat it such that each increases in length 5%. Thus a rod with length L1+L2 will also increase by 5%. use google
Thank you sir ..i would like to meet you..big respect sir
come to Cambridge, MA USA and we can meet
Sir can I use reduced mass concept here??
I get the same answer in a faster way.
Is reduced mass concept only confined to atomic physics or can I use it in mechanics too..
ok
Hello professor, the reason I'm contacting you is for a problem I've been working on for day without any compatible result. Your explanation in this video has been some kind of helpful for me, yet I've not succeeded to solve the problem yet. If you could help me with that, it would be very nice of you. Thank you very much. "A spring with the constant K=170 N/m is attached to two masses m=50gr and M=120gr, resting at equilibrium against a wall with mass m in contact with the wall. A ball is thrown toward the mass M. The ball hits mass M with the speed v and sticks to it, making the spring compress to its maximum compression, then extend, then compress again for the second time. If, during the second compression, the velocity of mass m is 1.2 m/s, how much is the compression of spring at this time? Answer in cm."
I do not solve problems for viewers; I teach Physics. Watch my 8.01 lectures and you will be able to solve your trivial problem.
Is this problem supposed to be solved by an high school student ?
it depends on the high school.
Don't know about other countries, but in India you have to solve this in high school (JEE)
@@nithin1729s Keep in mind that MIT is only a very mediocre University. That's why only 101 people who studied at MIT or who lectured there received a Nobel Prize. *That's very embarrassing.* Luckily you got a much better education.
Why did it square?
watch my 8.01 lectures! that's what they are for
I got a doubt cleared
I know I am slightly late in this... I used the knowledge gained through 803 lectures.
If we take the differential equations for x1 and x2, use Cramer's rule and solve for the determinant=0, we get the same answer.
Hello Respected Walter Lewin sir. I believed I had given the right answer. Kindly u dint worry me??
:)
You get about 100 msgs every day?(including my msg 101 😂)
:)
Not so complicated
Friends You can join : twitter.com/walter_club
Can you please mathematically prove why x1=(M/m)(Acoswt)
Since centre of mass must stay still at all moments , the sum of products of mass and distance if both those must be equal, plugging in the value of one position as that SHM eqn, we get the other
next problem. double pendulum system
nope