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Re: IS ANYONE HERE NOT STUPID?

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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:37 PM
bait

is anyone here good @ physics (gr 11 dynamics)

ye have test tmrw need 2 review some stoof cant find it online 4 some reason
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:37 PM
hit me with it

passed that course
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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:38 PM
when ur doing questions solving for the coefficient of friction (on a flat surface)

theres all this stuff like you need to write multiple Fnet statements and equate them

and i have no clue how to do that
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:39 PM
what are you trying to find

acceleration?
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N00BComando is not online. N00BComando
Joined: 28 May 2012
Total Posts: 31675
07 Apr 2016 07:40 PM
Is mayonnaise an intstrument
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HexC3D is not online. HexC3D
Joined: 30 Jun 2012
Total Posts: 10044
07 Apr 2016 07:40 PM
Write better description _._
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:41 PM
if i remember, the formula is

f = u (Fn)

f = frictional force
u = static
Fn = normal force
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HexC3D is not online. HexC3D
Joined: 30 Jun 2012
Total Posts: 10044
07 Apr 2016 07:42 PM
wrong post.

your crazy. lol
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HexC3D is not online. HexC3D
Joined: 30 Jun 2012
Total Posts: 10044
07 Apr 2016 07:43 PM
im crazy 0_0
what did I just say >.>
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:43 PM
you're given all the statics

if not, then your teacher is expecting too much
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Irradiant is not online. Irradiant
Joined: 31 May 2012
Total Posts: 56114
07 Apr 2016 07:46 PM
im too dumb for physics


WWC > All
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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:47 PM
@Wolf

It takes 58N of horizontal force to move a 22kg box to move at constant velocity

Solve for U



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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:49 PM
Because it's constant velocity your FNet will = 0 N because it's not accelerating

And you have the mass * gravity so ur normal force will be 22kg * 9.8m/s^2 = 215.6N

And now F(kinetic) = U * Fn

Am i on the right track
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HexC3D is not online. HexC3D
Joined: 30 Jun 2012
Total Posts: 10044
07 Apr 2016 07:50 PM
Txngo that's not bad _._
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:52 PM
@tx

exactly on the right track

now just get the static of the surface that it was pushed it

and then plug that in for Ff

so Ff = uFn

then just divide u into Ff to get Fn
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:52 PM
@tx

that it was pushed on *
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sharkbrandon is not online. sharkbrandon
Joined: 28 Mar 2012
Total Posts: 8086
07 Apr 2016 07:53 PM
is mayonnaise a gender



i wana go to school so i can see the girl i like
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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:53 PM
it doesnt give me the static i need to solve it
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 07:55 PM
they should either give you the Fnet or static

does it say what surface its being pushed on?
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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:56 PM
Dis is what I mean

Fk = U * Fn

Fk = U * 215.6N

I need to write a second statement so that i can get a value on the left side of the equation so that i can solve for U
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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 07:57 PM
@Wolf

Constant velocity which means FNet x is 0

And it's on a surface so FNet y is 0
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Wolfbain2315 is not online. Wolfbain2315
Joined: 16 Aug 2011
Total Posts: 47619
07 Apr 2016 08:01 PM
do they only give you 58N and 22 kg?
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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 08:03 PM
omg ur F(k) needs to = Fa because its not moving

So 58N = U * 215.6N

58/215.6 = U

0.27 = U

Right answer!!! we out here ng
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SplashedPaint is not online. SplashedPaint
Joined: 27 Aug 2014
Total Posts: 1455
07 Apr 2016 08:04 PM
theres geniuses here


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Txnqo is not online. Txnqo
Joined: 30 Apr 2015
Total Posts: 6946
07 Apr 2016 08:05 PM
high school physics lol
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