Any Physics Wiz here?

e92leon · 09-24-2008, 03:42 AM

Need help on 1 problem, please list some of the basic calculations for it too, thanks!

A object with mass m=1.0kg is rotating around a axis,with a constant angular speed omega=6.28rad/s.The radius of the circular motion is 2.0m.What is the: (1) tangential speed;(2)centrapital force; and (3) period?

thank you

E92-Lighting · 09-24-2008, 03:55 AM

these definitions are already online, what is your major?

e92leon · 09-24-2008, 04:02 AM

Quote:

Originally Posted by electronicwoot.com

these definitions are already online, what is your major?

I can't find it, my major is not Physics lol

Major Comm
Minor Cinematics (production)

E92-Lighting · 09-24-2008, 04:05 AM

why are you taking physics then, its not even a support course

e92leon · 09-24-2008, 04:14 AM

It's not for me, it's for my girlfriend who's a Bio major with emphasis in Pharmacy and Dentistry

clark192 · 09-24-2008, 04:20 AM

its been a long time since ive done physics. if you check out wikipedia, you should find the formulae you need. you have all that you need to calculate the tangential speed, and im pretty sure the period as well. just plug and chug.

E92-Lighting · 09-24-2008, 11:02 AM

Quote:

Originally Posted by clark192

its been a long time since ive done physics. if you check out wikipedia, you should find the formulae you need. you have all that you need to calculate the tangential speed, and im pretty sure the period as well. just plug and chug.

agree, should be an easy problem

aut0sh0cker · 09-24-2008, 11:18 AM

a)

v=tangential speed
r=radius
w=angular speed

therefore:

v=rw

b)

f=centripetal force
v=tangetial velocity
r=radius
m=mass

f=m*(v^2)/r

c)

T=1 sec

This is because the total radians in a circle is 2pi (2pi=360degrees)
Therefore, if the thing has an angular velocity of 6.28 (remember, pi=3.14 so 2pi=6.28) it will complete 6.28 radians at 6.28 radians/sec in 1 sec...

-Scott

inabis · 09-24-2008, 11:25 AM

Seriously? Man use the internet before the forums.

1. V=r*omega...............you don't need any conversions here so you're set.

2. Fcentripital = m*(v^2)/r.......................once again no conversions needed

3. T=2*(pi)/omega.......................once again no conversions needed

Edit: dammit Scott you beat me!!

aut0sh0cker · 09-24-2008, 01:29 PM

Quote:

Originally Posted by inabis

Seriously? Man use the internet before the forums.

1. V=r*omega...............you don't need any conversions here so you're set.

2. Fcentripital = m*(v^2)/r.......................once again no conversions needed

3. T=2*(pi)/omega.......................once again no conversions needed

Edit: dammit Scott you beat me!!

Seriously? Man read the thread before you post.

darkphantom · 09-24-2008, 01:33 PM

lol, thanks for the refresher, two engineering physics classes, and I can't even remember this stuff! LOL - I mean I do, but its back there some where.....WAY back there

MadDog · 09-24-2008, 01:36 PM

Quote:

Originally Posted by darkphantom

lol, thanks for the refresher, two engineering physics classes, and I can't even remember this stuff! LOL - I mean I do, but its back there some where.....WAY back there

I had to take four years of Calculus for my CS degree. Think I remember any of it ?? No fricking way.

darkphantom · 09-24-2008, 02:14 PM

Quote:

Originally Posted by MadDog

I had to take four years of Calculus for my CS degree. Think I remember any of it ?? No fricking way.

LMAO....wow

inabis · 09-24-2008, 03:02 PM

Quote:

Originally Posted by aut0sh0cker

Seriously? Man read the thread before you post.

That's what I get for working while answering a thread rofl.....you didn't post when I hit "reply"

darkphantom · 09-24-2008, 03:04 PM

Quote:

Originally Posted by inabis

That's what I get for working while answering a thread rofl.....you didn't post when I hit "reply"

If you're going to be technical, then you can say he did, because we don't know when you hit reply - because the page isn't updated, so if you hit reply at 10:19 even though you opened your page at 10:17, his reply was at 10:18 and he may have very well posted his answer before you hit the reply button.

aut0sh0cker · 09-24-2008, 05:34 PM

Thank you darkphantom!

I win:

e92leon · 09-25-2008, 12:08 AM

THANKS GUYS!!! I may have MORE problems coming up!!
lol
E90post = FTW

aut0sh0cker · 09-25-2008, 01:41 AM

Quote:

Originally Posted by e92leon

THANKS GUYS!!! I may have MORE problems coming up!!
lol
E90post = FTW

I will help with what i can... mechanical engineering major FTW!!!

RBBMWE46M3 · 09-25-2008, 01:44 AM

Oh yea,,,how do you get rid of turbo lag? answer that smarty

aut0sh0cker · 09-25-2008, 01:46 AM

Quote:

Originally Posted by RBBMWE46M3

Oh yea,,,how do you get rid of turbo lag? answer that smarty

buy a m3... problem solved!

synclastica_86 · 09-26-2008, 03:24 AM

Quote:

Originally Posted by inabis

Seriously? Man use the internet before the forums.

1. V=r*omega...............you don't need any conversions here so you're set.

2. Fcentripital = m*(v^2)/r.......................once again no conversions needed

3. T=2*(pi)/omega.......................once again no conversions needed

Edit: dammit Scott you beat me!!

Well... he obviously want this done relativisticly using tensor calculus... I mean... why else would he post such a question? He is not a retard you know. Or is he?

TiAg335i · 09-26-2008, 10:34 AM

Plug and chug...can't get any easier than that dude.

09-24-2008, 03:42 AM	#1
e92leon 我的車車有Turbo&!!! 159 Rep 2,597 Posts Drives: 빠른차 Join Date: Dec 2007 Location: ????? iTrader: (5) Garage List 2008 E92 335i [10.00] 2006 RX-8 (SE3P) [0.00]	Any Physics Wiz here? Need help on 1 problem, please list some of the basic calculations for it too, thanks! A object with mass m=1.0kg is rotating around a axis,with a constant angular speed omega=6.28rad/s.The radius of the circular motion is 2.0m.What is the: (1) tangential speed;(2)centrapital force; and (3) period? thank you __________________ Flickr
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09-24-2008, 03:55 AM	#2
E92-Lighting 889 Rep 35,253 Posts Drives: Next Generation LED Lighting Join Date: May 2008 Location: Walnut iTrader: (324)	these definitions are already online, what is your major?
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09-24-2008, 04:05 AM	#4
E92-Lighting 889 Rep 35,253 Posts Drives: Next Generation LED Lighting Join Date: May 2008 Location: Walnut iTrader: (324)	why are you taking physics then, its not even a support course
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09-24-2008, 04:14 AM	#5
e92leon 我的車車有Turbo&!!! 159 Rep 2,597 Posts Drives: 빠른차 Join Date: Dec 2007 Location: ????? iTrader: (5) Garage List 2008 E92 335i [10.00] 2006 RX-8 (SE3P) [0.00]	It's not for me, it's for my girlfriend who's a Bio major with emphasis in Pharmacy and Dentistry __________________ Flickr
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09-24-2008, 04:20 AM	#6
clark192 Second Lieutenant 17 Rep 230 Posts Drives: 2006 325i (EU) Join Date: Aug 2007 Location: Bahrain iTrader: (0)	its been a long time since ive done physics. if you check out wikipedia, you should find the formulae you need. you have all that you need to calculate the tangential speed, and im pretty sure the period as well. just plug and chug.
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09-24-2008, 11:18 AM	#8
aut0sh0cker meh 126 Rep 1,752 Posts Drives: E92 335i, 997.2 C4S Join Date: Jan 2008 Location: 91362 iTrader: (2)	a) v=tangential speed r=radius w=angular speed therefore: v=rw b) f=centripetal force v=tangetial velocity r=radius m=mass f=m*(v^2)/r c) T=1 sec This is because the total radians in a circle is 2pi (2pi=360degrees) Therefore, if the thing has an angular velocity of 6.28 (remember, pi=3.14 so 2pi=6.28) it will complete 6.28 radians at 6.28 radians/sec in 1 sec... -Scott
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09-24-2008, 11:25 AM	#9
inabis Captain 317 Rep 955 Posts Drives: E90 Join Date: Feb 2006 Location: Daytona Beach->Denver->Seattle->The Bay iTrader: (2) Garage List 2006 325i [0.00]	Seriously? Man use the internet before the forums. 1. V=romega...............you don't need any conversions here so you're set. 2. Fcentripital = m(v^2)/r.......................once again no conversions needed 3. T=2*(pi)/omega.......................once again no conversions needed Edit: dammit Scott you beat me!! __________________
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09-24-2008, 01:33 PM	#11
darkphantom Banned 654 Rep 5,945 Posts Drives: E93 335i Join Date: Aug 2007 Location: The place for Bimmers iTrader: (4)	lol, thanks for the refresher, two engineering physics classes, and I can't even remember this stuff! LOL - I mean I do, but its back there some where.....WAY back there
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09-24-2008, 05:34 PM	#16
aut0sh0cker meh 126 Rep 1,752 Posts Drives: E92 335i, 997.2 C4S Join Date: Jan 2008 Location: 91362 iTrader: (2)	Thank you darkphantom! I win:
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09-25-2008, 12:08 AM	#17
e92leon 我的車車有Turbo&!!! 159 Rep 2,597 Posts Drives: 빠른차 Join Date: Dec 2007 Location: ????? iTrader: (5) Garage List 2008 E92 335i [10.00] 2006 RX-8 (SE3P) [0.00]	THANKS GUYS!!! I may have MORE problems coming up!! lol E90post = FTW __________________ Flickr
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09-25-2008, 01:44 AM	#19
RBBMWE46M3 blaupunkt 61 Rep 525 Posts Drives: 2008 335xi 6spman montego Join Date: Jan 2006 Location: THE REGION iTrader: (0) Garage List 2008 x5 [0.00] 1972 R75/5 [0.00] 2008 335xi [0.00]	Oh yea,,,how do you get rid of turbo lag? answer that smarty __________________ BMW ENGINEERS
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09-26-2008, 10:34 AM	#22
TiAg335i Trance Life 344 Rep 4,706 Posts Drives: 2007 E92 335i Join Date: Jan 2007 Location: Long Island, NY iTrader: (4)	Plug and chug...can't get any easier than that dude.
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