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/sci/ - Science & Math

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3867961 No.3867961 [Reply] [Original]

Any Physicsfags out there? Bet you can't solve this.

Sled being pulled along snow at 30 degree angle, Sled weighs 50 kg's
Coefficient of static friction is 0.30
Coefficient of kinetic friction is 0.15

What is the applied force?

>> No.3867980

sage

>> No.3867983

>>3867980
Can't do it soft-dick?

>> No.3867987

If you're going to post homework requests, you should disguise them better. Saged and reported.

>> No.3867995

>>3867987
Not even close to homework, it's 2 o'clock in the morning on a friday night, who does homework? Solve it and then talk to me.

>> No.3867998

50sin30

>> No.3868000
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3868000

>>3867995
You're lucky I don't have the image for 0/10.

>> No.3868005

>>3867998
incorrect, try again.

>> No.3868010

>I bet you can't do my homework!

>> No.3868013
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3868013

The Force Is Strong With This One

>> No.3868019

>Challenge /sci/ to do homework
>???
>Profit

That's not how it works fag­got.

>> No.3868024

>>3867961
not enough info provided
is the sled accelerating?

still not gonna do your hw

>> No.3868021

need more info. is the sled moving at a constant velocity? is it accelerating? that is necessary info to solve

>> No.3868028

85 Newtons?

>> No.3868042

>>3868024
>>3868021
>>3867998
Dumbasses detected

>> No.3868058

>>3868010
There are a lot of easier ways to get homework done if it was homework than to ask /sci/.
It's just a simple question, don't figure it out if you don't want too.

NetF=Fx-Ff
0=(-FyTan30)-(0.30(FN))
0=(FyTan30)-(0.30(Fg-Fy))
0=(FyTan30)-(0.30((9.8(50))+Fy)
0=(Fy(0.58)-0.30(490)+Fy
0=(Fy(0.58))-147+Fy
253.45=2Fy
126.725=Fy
126.725/sin30=FApplied

>> No.3868061

>>3868042
to fucking stupid to know that the problem was missing a key piece of information.

>> No.3868065

>>3868061
It's called basic formula persuading.

>> No.3868069

>>3868042

cool story, bro!

>> No.3868073

>>3868058
Why did you sub in the coefficient of static friction when the box is in motion?

>> No.3868080

needs more info

>> No.3868078

>>3868058
without a value for the forward force, you cant even assume it moves. you'd need to compare <span class="math"> Fcos(30°) [/spoiler] to <span class="math"> f_s~max [/spoiler]

>> No.3868076

>>3868073
Box is not in motion, I meant to put in the question "What is the necessary applied force to make the sled move" my bad.

>> No.3868083

>>3868080
No it does not, sled is at rest, what is the necessary applied force to set it in motion.

>> No.3868087

>>3868078
I'm not assuming it moves, it's at rest, NetF = 0.

>> No.3868092

>>3868083
Pretty sure it does I have a phd in physics 300k starting

>> No.3868095

>>3868092
Because salary means anything. This is a 12th grade question should be fairly simple. WHat other info?

>> No.3868097
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3868097

>>3868058
>mfw that's wrong

>> No.3868101

>>3868097
I know it is, the 2nd Fy component should be negative throughout.

>> No.3868104

did AP physics start learning about friction?

>> No.3868128

>>3868058
Fytan30 =/= Fx

cool being wrong bro

>> No.3868150

>>3868128
Shit you're right, drunk mistakes.

>> No.3868155

>>3868150
>high school physics
>tries to pass it off as a drunk mistake

>> No.3868156

>>3868155
bro, it's 3 am on a saturday morning, if you're not drunk, enjoy your porn.

>> No.3868164

>>3868156
>claiming one should be drunk in high school at 3 am
>while desperately begging the internet for help with physics homework

>> No.3868166

>>3868164
Need a hug?

>> No.3868174

>>3868166
>attempting to shift the blame of antagonism

>> No.3868181

>>3868174
>Likes to speak in third person because it makes him feel like he's being acknowledged by others.

>> No.3868192

>>3868181
>he doesnt understand greentext
>laughingwhores.png

>> No.3868198

>>3868192
> Shameful last comment to try and hold in the tears of not having a life outside of /sci/.

What's next, "Your MOM"?

>> No.3868201

>>3868198
>3 am
>drinking my shame away
>cant even do physics homework
>expect the internet to do it for me
>get angry at people on the internet
>tell them they have no life

>> No.3868202

>>3868201
>YOUR MOM.