8.01x - Module 15.03 - Two springs with an object (m) between them.

[@ramasharma7389]

thanks.....sir u explained it in the simplest way due to ur extreme knowledge

[@lecturesbywalterlewin.they9259]

:)

[@oneaboveall4930]

Sir you are amazing I want to become like you You made me fall in love with physics

[@flavioing1]

Special Professor.

[@HariprashadRavikumar]

Hello professor! Time period is independent of amplitude. Just consider an ideal spring which has an time period of few seconds, if we stretch it out to the distance of 1 light year and then let it go. Will it swing faster than the speed of light ? (It's an ideal spring and time period is independent of amplitude).. I know this will not happen and it's an crazy idea. But just think for a moment. Thank you for making me understand Physics in deeper level. I have watched almost all the lectures from you. I love all of them!!! Thank you Lovely, Hariprashad Ravikumar (from India)

[@lecturesbywalterlewin.they9259]

In my Lectures at MIT I typically extend springs by about 10 light years. Works very well.

[@HariprashadRavikumar]

Lectures by Walter Lewin. They will make you ♥ Physics. If it so, will it swing faster than the speed of light ?. Will it break the laws of physics ?

[@lecturesbywalterlewin.they9259]

Yes the speed is then easily 10c. Students ❤️ that as they use that speed to travel to the Moon; it will take them only 0.1 sec (and, of course, 0.1 sec back to Earth). PLEASE watch my lectures and get educated. I discuss in one of my lectures the conditions for Hooke's Law to hold.

[@HariprashadRavikumar]

Sure professor.. thank you for letting me know ☺

[@sumeraiqbalw7235]

Love your fascination regarding the topic towards the end, really shows you are an amazing teacher!

[@shineeteentop24]

you blew my mind.....thx for the pset help lol

[@michelef406]

So, does anyone know where how can I get a ring like that one? The physics thing is not bad either.

[@faouzichennouf1767]

Thank you Sir.

[@lecturesbywalterlewin.they9259]

You are most welcome

[@nabanitagoswami6652]

Best explaination

[@wuyizhou]

explanation

[@faouzichennouf1767]

Thank Sir

[@giabao576]

thank you

[@rajdeepchatterjee9137]

Thanks a lot Sir

[@tmkocduniya4841]

F=ma Newton's second law

[@ABHISHEKKUMAR-om6vx]

Sir at 16:55 force Fk2=K2s exerting should due to K2 because k2 is spring constant kf 2nd spring and compression occuring in it and due to K1,Fk1=k1s...I am confused

[@lecturesbywalterlewin.they9259]

I listened from 16:00 - 18:00 and I cannot add to the clarity of this video. Plse watch it again

[@ABHISHEKKUMAR-om6vx]

@@lecturesbywalterlewin.they9259 ok sir

[@wuyizhou]

@@ABHISHEKKUMAR-om6vx so similar to the first part, the two forces add

[@vladimirprotein3275]

15:31 Sir, how would the motion play out if the mass was displaced horizontally, how would we find it's time period?

[@lecturesbywalterlewin.they9259]

study my 8.01 lectures - you can then do it

[@backyard282]

2:15 isn't that equation wrong? Amplitude A is negative, so when multiplied by x roof you would get that the resulting spring force is in negative direction, when it is in fact in positive direction.

[@lecturesbywalterlewin.they9259]

eq is correct

[@wuyizhou]

@VidyVid amplitude is always positive, it's the absolute value of maximum displacement.