The h Bar

Abcd

12:01

Yes John Rennie had explained it to me earlier

But thats clean gone out of my mind

THe biggest problem is that I can't see pulley anywhere

Bernardo Meurer

@ACuriousMind Are you around?

user223506

dang i am answer-chatty today!

user223506

12:28

hello @Loong

Loong

@Doc hi

user223506

how you be?

Kenshin

msn.com/en-au/news/world/…

user223506

lol

user223506

sometimes I wonder..

user223506

12:34

+1 for explanation. Thanks. But i am looking for more detials. — John Sr 3 mins ago

user223506

i wonder if that user just wants all his homework done for him

Lu Bu

Why would any1 want to do that.

user223506

laziness

Lu Bu

Asking help i understand, but asking an answer and not
learning anything from it makes no sense. And will never
be useful.

Abcd

And yes I am not here to get my homework done !

user223506

12:48

@LuBu i agree wholeheartedly

user223506

@Abcd you're fine - my comments are in reference to answer i just wrote

Abcd

Okay @Doc

user223506

my answer may help others

user223506

1

A: Differentiate b/w scalar and vector in Newtonian mechanics

Your definitions of scalars and vectors are fine. In specific answer to your questions: and 3, are related, so I'll address them first: $$speed = \frac{distance}{time}$$ and $$velocity = \frac{diplacement}{time}$$ Where distance is a scalar quantity that refers to "how much ground ...

user223506

13:59

hey @SirCumference I think i got help-vampire-d

Sir Cumference

@Doc That sucks

No pun intended

ACuriousMind

@BernardoMeurer I am now

user223506

lol

user223506

i got an upvote out of it at least

user223506

hullo @ACuriousMind

ACuriousMind

14:04

Hey @Doc

user223506

@ACuriousMind what's new?

ACuriousMind

not much

Sigh...I just handled some flags and after reloading there was the same number of new flags. I guess it's one of those days...

user223506

oh joy!

user223506

there's nothing wrong with my answer here physics.stackexchange.com/a/303509/140434 is there?

Physics Meta

0

Q: "user removed": who was removed? And what is the -2 due to?

I just saw this in my rep tab: The screenshot was taken on Saturday, January the 7th, around 15:03 in the Italian time zone, that is GMT+1, just before asking this. I was wondering: What user was removed to cause this? Why were they removed? And what exactly was the -2 due to? I don't mi...

ACuriousMind

14:13

@Doc Not except for the ugly TeX I just fixed ;)

user223506

@ACuriousMind the acceleration equation is weird...

ACuriousMind

Heh, I typed frac instead of text there, fixed

user223506

lol

user223506

well, i learnt something new!

user223506

and i was definitely help-vampire'd by that user...lol

Bernardo Meurer

14:32

@ACuriousMind Go on Skype

I need your opinion on something

Bernardo Meurer

15:05

@ACuriousMind Dood

user228700

@JohnR: Will u please do me a favour? Between now and May 21st, if I start talking (in your presence, of course) about food/music or anything apart from Physics, Math or Chemistry, really, will u please ignore me completely? Will u please ignore any attempt at making conversation about anything other than aforementioned subjects? I have realised that my inner monkey waitbutwhy.com/2013/10/why-procrastinators-procrastinate.html) is running rampant.

ACuriousMind

@BernardoMeurer I was on the phone :P I don't have Skype installed on this laptop, can you not ask me here?

Bernardo Meurer

@ACuriousMind Meh, I'd rather not :P

Do you have telegram?

Are you a cool kid?

ACuriousMind

@BernardoMeurer Guess I'm installing Skype then, this better be good ;)

Bernardo Meurer

15:20

@ACuriousMind It's important but I would not say it's good :P

ACuriousMind

Sigh...please wait till I have reset my Skype password for the umpteenth time :)

user228700

(@JohnR: P.S: Do not factor into this request the fact that I may be stressed. Only if I restrict myself so am I going to get my sh*t together)

Kenshin

r u stressed

Bernardo Meurer

@ACuriousMind Lol, you can never remember that damn password

user228700

@Kenshin Well, I dunno. What dyou think, based on what you know about me? :-) Also, hey.

ACuriousMind

15:22

That's because I use Skype once in a blue moon!

Bernardo Meurer

@ACuriousMind Pff, Stallmanite

Kenshin

this is 2017 tho, ppl shdnt be stressed

user228700

@Kenshin Is that the new rule? Source? (:-P)

user228700

@Ken: Still on holiday, BTW? Haven't seen u around in awhile.

Kenshin

i'm the only source ppl shud need

ACuriousMind

15:25

wtf

sigh

user228700

@Kenshin Lol, okay.

ACuriousMind

I reset the wrong account :D

Kenshin

which one?

ACuriousMind

Why on earth do I have two Skype account I never use?

Kenshin

John Rennies?

@ACuriousMind first world problems

user228700

15:26

^

user228700

:-P

Bernardo Meurer

Jesus lord

heather

lol @ACuriousMind you're an AI or did your databanks get wiped or something?

ACuriousMind

@BernardoMeurer I am online in the correct one now, no need

Bernardo Meurer

Lol

Kenshin

15:28

@Kaumudi.H no i'm not on holiday sanymore

but i play computer games now

ACuriousMind

On the plus side, I did remember the password for the newer account

user228700

@Kenshin OK. Is one of ur resolutions "Don't spend so much time on PSE", then? :-P Also, I just realised. U're still up?! Isn't it like...2 AM over there?

Kenshin

yeah I got distracted on the game

no coming on here isn't a resolution

i mean not coming on her e ins't a resolution

user228700

@Kenshin Oh, okay. Have fun :-)

Kenshin

but i stopped playing the game

that's why i'm bac here

user228700

15:29

Ah, I see.

user228700

Dood, I had tiramisu and everything, did u see? :-P

Kenshin

wats dat

u need to ping me dood

user228700

I even uploaded a picture!

Kenshin

oh cool desert

user228700

Thought u might read the transcript :-.

Kenshin

15:30

the pciture is on google

lol

i only read if i'm pinged

user228700

Kenshin

oh that looks yum

user228700

Indeed it was :-D

Kenshin

y did u have that for

@Kaumudi.H ur naughty

I see that's too close to the laptop

user228700

Lunch. What dyou mean "why did u have that for?!

user228700

15:32

@Kenshin Yeah, I was hoping no one would notice that :-P

Harsha G.

0

Q: Prove that the coefficient of friction has to be $ μ >3/2\frac {sin \theta}{1+3sin^2 \theta}$ for pure rolling of an inclined rod

A rod of mass $M$, and length $L$ is kept at an angle $\theta$ on a surface (at rest), and then released. Prove that the coefficient of friction has to be $ μ >3/2 \frac {sin \theta}{1+3sin^2 \theta}$ The condition is that there is no slipping, and only pure rolling.

homework-and-exercises newtonian-mechanics classical-mechanics angular-momentum rotational-dynamics

Kenshin

i wondered y u got that and posted a photo?

Harsha G.

^ Please help

Kenshin

just a random desrt u ate?

Harsha G.

Is this chat not meant for science stuff?

Kenshin

15:33

@HarshaG. no this is a bar, the h bar

Harsha G.

@Ken

I'll leaven then

user228700

@HarshaG. Yes, it is :-) Although we don't always restrict ourselves to physics. If anybody is interested to help you with your query, they will reply. (Also, @Ken was kidding)

Kenshin

@HarshaG. fine then

was i :p

wow my comment was deleted?

user228700

@Kenshin Oh, no, I actually asked for help to choose what to order so then I had to post a picture.

Kenshin

I said "fine then" and it's gone wth

ahh i see

good choice

Harsha G.

15:35

No, it's still there Ken

user228700

@Kenshin Dude, it's right there!

ACuriousMind

@HarshaG. This is the general chat for physics.SE, you can certainly ask physics questions here

Kenshin

oh yeah

someone must have put it back :p

user228700

Also, @Ken: I feel like nobody around here gets ur humour. They get offended way too quickly :-P This has happened like, way too many times.

Kenshin

lol they're not aussie enough

but then again americans have a good sense of humour too electing Trump

user228700

15:37

Also, the "Don't encourage conversation about other crap" request goes for u as well, @Ken :-P Starting tomorrow.

Kenshin

aww k

Harsha G.

@Kaumudi.H Can you answer that question? It's for JEE homework...

I assume you are Indian?

Kenshin

@HarshaG. for homework go to physics.qandaexchange.com

ACuriousMind

@HarshaG. However, we consider barging in and posting your newly posted question also here without any context as to why we should find it interesting a bit rude

Kenshin

@HarshaG. please don't assume people's country in this chat

Harsha G.

15:38

:(

Kenshin

oh don't be sad, you can

user228700

@Kenshin DUDE. Chill. (Or, well, at least realise people don't get ur humor. I just said that :-P)

Kenshin

lol

soz

user228700

@HarshaG. Yes, I am but I'm not an expert in RBM yet. Sorry.

Harsha G.

It's okay. Also @Kenshin, I am not offended. Don't worry/

user228700

15:40

Lol, Kenshin doesn't worry x'D

Kenshin

@HarshaG. but seriously your question is more on topic on physics.qandaexchange.com and will probably be closed on stack exchange

user228700

@Harsha: ^ Yep.

Harsha G.

I'll try it there then

Kenshin

look at that, cloesd already

by this guy, @ACuriousMind

user228700

My only prayer is that someday, @Ken: U don't offend someone so much that you get suspended or whatever. Just. Please. I like you, so don't like get yourself suspended or whatever :-P

Kenshin

15:42

yeah I'll try not

I think I know the line and try to stay inside it

user228700

:-D Okay.

Harsha G.

I doubt that

Kenshin

I said nothing

Harsha G.

LOL

user228700

@Kenshin Thasright :-P

user228700

15:44

Wokay, gots to go. @Ken: Remember the request!! Night!

Kenshin

u know i'm Einstein there right

ok goodnight @Kaumudi.H

user228700

@Kenshin Well, I know now.

Kenshin

cool

@Kaumudi.H alternatively u can always use the "feedback" form on the bottom of the site

laterz all

Harsha G.

Is the formatting on physics.qandaexchange.com same as on stackexchange? @Kenshin

Kenshin

yep

Harsha G.

15:47

Cool

Kenshin

sometimes u may need to place a \ sign before any _ when using mathjax

@HarshaG. I've updated the formatting: physics.qandaexchange.com/?qa=879/…

Harsha G.

@Kenshin I love you

I mean thanks

Kenshin

ty

Can you also pls edit the post show ur working so far if u get time

because this is generally the policy (although more leniant on new users/first posts)

Lu Bu

@Kaumudi.H I don't think procrastination can be helped.
If i am not able to concentrate on something for
some reason, i think i cannot force myself to
concentrate on it and i just end up staring at the text
and into the void.

But idk, it might be different for ppl at the university
level, if they have tight schedules.

Harsha G.

@Kenshin Can I put up a picture, or do I have to type the mess?

Kenshin

15:53

a picture of your working?

if the picture is neat, that can be done

you will need to upload the image to imgr or something

because you can only upload images if there is an existing link

to that image

Harsha G.

@Kenshin If it's not neat, please remove it.

Kenshin

ok

@HarshaG. your edit has been approved

hopefully it will be answered soon

I gtg to bed now and if not answered i'll take a look when i awake

laterz all

Harsha G.

Does my working make any sense at all?

Kenshin

it's neat, but it's 2AM so I can't really check it

Harsha G.

Well thanks for your help Kenshin

Kenshin

16:04

np bye

Harsha G.

Good Night :)

Emilio Pisanty

20:55

Have folks seen this?

Not sure if it's the same person as before, but it's definitely interesting.

Bernardo Meurer

21:20

@EmilioPisanty HOLY CRAP

Shashaank

@JohnRennie Could you please answer this physics.stackexchange.com/q/264128/113699 question of mine. I have been still very unclear regarding the answer but I hope to get it clear

anonymous

21:58

@Shashaank In classical mechanics an inertial frame is well-defined only in the immediate neighborhood of a body. There is no fixed rule for selecting a frame as inertial. What matters is the relative acceleration and relative velocities of frames.

You can select any frame as inertial and write the equations of motion of a body. They fundamentally remain the same.

Phillip K Poon

Hi

Physics Meta

22:21

0

Q: What is the best way to draw out a physics question for this website?

Sometimes I'll have questions that I can't describe well in words, and I was wondering if there were any recommendations for how to draw it out, such as a free download to draw with or something.

discussion

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