#physics

170 messages · Page 1 of 1 (latest)

last cape
#

Alright we can start again from scratch

#

@tiny crystal

tiny crystal
tiny crystal
#

hii

#

here is the drawing

last cape
#

Hello

tiny crystal
#

and this

last cape
#

Alright

tiny crystal
#

wait let me translate

last cape
#

$R=\mu N$

Where:

$R=\text{friction force}$

And:

$N=\text{Normal force}$

strong oliveBOT
#

Leonhard Paul Euler

351385565586915329.png
tiny crystal
tiny crystal
last cape
#

Correct

#

So

#

How do we find what the friction is?

#

The friction force

tiny crystal
#

well fraction = mu*N

#

however

#

fraction is the same as S here

last cape
#

Correct

#

And also

#

?

tiny crystal
#

hm

#

i am not sure

#

is fraction the same as G and S here?

tiny crystal
last cape
#

Can we not use letters honestly 4am

#

It's, confusing

tiny crystal
#

okok

last cape
#

Who uses R

tiny crystal
#

me

#

and the book

#

ahaha

#

ok soo

#

fraction is the same as the pulling force

last cape
#

Yeah

#

Logically speaking

tiny crystal
#

yes

last cape
#

I'm just reasoning, I haven't solved this type of question in eonsn

tiny crystal
#

but which pulling force? 😭

last cape
#

So the pulling force is 0.500kg×9.81m/s²

tiny crystal
#

but dont we have two pulling forces?

#

or noo

last cape
#

How?

tiny crystal
last cape
#

Because the 0.2kg object is not pulling

tiny crystal
#

aaaa

#

i see

last cape
#

It is the one being pulled

tiny crystal
#

i see

last cape
#

The force of the pulling itself is from the object falling down

#

Makes sense?

tiny crystal
#

ok so the pulling force = 4.9

tiny crystal
tiny crystal
last cape
#

And the normal force?

tiny crystal
last cape
#

Exactly

#

Since this is the object on the table

tiny crystal
#

yes

last cape
#

Gravity doing it's work

#

So

tiny crystal
#

wait

#

i have a question

last cape
#

,w 0.5×9.81 and 0.2×9.81

last cape
tiny crystal
#

does M also have a normal force?

strong oliveBOT
tiny crystal
#

the one pulling

#

or does it only have the pulling force

last cape
#

Let me see what's M

tiny crystal
#

the big object

last cape
#

The big object?

#

No, no normal force

tiny crystal
#

ok

last cape
#

Since it's not resting on the table

tiny crystal
#

yess

#

right

last cape
#

Yes so

tiny crystal
#

ok and now i can just calculate the mu

#

R/N

last cape
#

R=μN

#

Therefore

#

μ=(0.5×9.81)/(0.2×9.81)

#

=2.5

tiny crystal
#

yes

#

i understood now

last cape
#

Great

#

Please feel free to tip

#

$50 minimum

tiny crystal
#

huh

#

what do u mean?

last cape
#

I'm joking

tiny crystal
#

bahahaha

last cape
#

You're all good

tiny crystal
#

i mean u explained really good though

last cape
#

Yeah thanks

tiny crystal
#

thanks for you time

last cape
#

I'm just rusty

tiny crystal
#

i really appreciate it

last cape
#

So this was a good refresher on the old helping days

tiny crystal
#

buut

last cape
#

You have more questions? 3am

tiny crystal
#

ahahaha i doo

#

actually

#

if u dont mind

last cape
#

Sure, I want an excuse to procrastinate my own work and studies

#

This is perfect

tiny crystal
#

ahah

#

well one learn much when helping others actually

last cape
#

Yeah

tiny crystal
#

ok so

last cape
#

I've learnt now when helping you

#

Since all this is forgotten memories

tiny crystal
#

aw i am glad u did

tiny crystal
last cape
#

Alright next question

tiny crystal
#

if the speed is constant, should the sum of all forces equal to 0?

#

that why we have to use letters

#

to show all the forces we have used to calculate what mu is

#

but at least i understood how we got the value of mu

#

but i am not really sure how to show it by letters

last cape
#

Hmmm

#

No worries

#

We'll letter it up

tiny crystal
#

ok

last cape
#

But let's use F for friction rather than R

#

As sane people do

tiny crystal
last cape
#

So

#

The net force is 0

tiny crystal
#

yes

#

all forces for m is zero

last cape
#

The weight of the 0.2kg object, the normal force

tiny crystal
#

and all forces for M is zero

tiny crystal
last cape
#

And the friction with the tension

#

Yes so

#

Make that into letters

tiny crystal
#

i was trying but it seems wrong

#

@last cape

last cape
#

Hmmm

tiny crystal
last cape
#

Sorry I forgot about this

tiny crystal
last cape
#

One sec, middle of something

tiny crystal
#

noo its finee

last cape
#

?

tiny crystal
#

take your time

#

i will update you if i get any further

#

but thank you very much

last cape
#

My pleasure

last cape
tiny crystal
#

I GOT IT

last cape
tiny crystal
stable fernBOT
#

@tiny crystal has given 1 rep to @last cape

last cape
#

Now we close this ticket

#

I don't know how though

tiny crystal
#

+close