Question on physics :) - diyAudio
Go Back   Home > Forums > Member Areas > The Lounge

The Lounge A place to talk about almost anything but politics and religion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th May 2006, 09:00 PM   #1
sss is offline sss  Israel
diyAudio Member
 
sss's Avatar
 
Join Date: Jul 2003
Location: Israel , haifa
Send a message via ICQ to sss
Default qquestion on physics :)

look at the pic ...
the small wheel is turning the big wheel ,when a chain is connecting between them .

if the small wheel is turning at constant speed , no friction whatsoever ...
is there a force on the chain?
Attached Images
File Type: jpg 1.jpg (12.0 KB, 187 views)
__________________
if you are not living on the edge you are taking too much space
  Reply With Quote
Old 6th May 2006, 10:11 PM   #2
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Once everything is up to speed, no, assuming everything is lossless. The big wheel's angular momentum is conserved.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 7th May 2006, 05:36 AM   #3
maxro is offline maxro  Canada
diyAudio Member
 
maxro's Avatar
 
Join Date: Dec 2004
Location: Survey says: Least happiest city in Canada
What's the real-world application? There is no such thing as 'no friction whatsoever'. Beware, this could turn into another conveyer-belt thread.

Max
__________________
"No one likes jazz that much; even the guy playing it had to take drugs." -Bart Simpson
  Reply With Quote
Old 8th May 2006, 04:37 AM   #4
sss is offline sss  Israel
diyAudio Member
 
sss's Avatar
 
Join Date: Jul 2003
Location: Israel , haifa
Send a message via ICQ to sss
Quote:
Originally posted by maxro
What's the real-world application? There is no such thing as 'no friction whatsoever'. Beware, this could turn into another conveyer-belt thread.

Max


nah , SV allready answered the question (thanx btw!)
but , i forgot ,there must be a static friction between the chain and the wheels , if not then the chain wont move
__________________
if you are not living on the edge you are taking too much space
  Reply With Quote
Old 9th May 2006, 03:53 AM   #5
diyAudio Member
 
xplod1236's Avatar
 
Join Date: Dec 2003
Location: On the couch
Send a message via AIM to xplod1236
There has to be a force on the chain. If there was no force, the momentum of the links that are going straight would keep them going straight. But as you illustrated, they go around the sprockets. The centripetal acceleration of the links makes chain want to come off the sprocket as it goes around. The chain, being a loop, prevents this because the other side of the chain going around the other sprocket wants to come off in the opposite direction. All this results in tension in the chain.

If the chain was a perfect circle, then there would be no force on it.
  Reply With Quote
Old 9th May 2006, 02:43 PM   #6
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
But even if the chain was a perfect circle wouldn't there be an amount of centrifical force on each chain link as it moved around?
  Reply With Quote
Old 9th May 2006, 03:08 PM   #7
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
sorry ...couldn't resist .....tried not to but ....
Attached Images
File Type: jpg jet.jpg (10.7 KB, 149 views)
  Reply With Quote
Old 9th May 2006, 03:25 PM   #8
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On


Way to go quasi!

Troublemaker!

-Chris
  Reply With Quote
Old 9th May 2006, 03:50 PM   #9
diyAudio Member
 
xplod1236's Avatar
 
Join Date: Dec 2003
Location: On the couch
Send a message via AIM to xplod1236
Quote:
Originally posted by quasi
But even if the chain was a perfect circle wouldn't there be an amount of centrifical force on each chain link as it moved around?
You're right. Either way, there would be tension in the chain. I don't know how I missed that part.
  Reply With Quote
Old 9th May 2006, 05:23 PM   #10
sss is offline sss  Israel
diyAudio Member
 
sss's Avatar
 
Join Date: Jul 2003
Location: Israel , haifa
Send a message via ICQ to sss
Quote:
Originally posted by xplod1236


You're right. Either way, there would be tension in the chain. I don't know how I missed that part.
if the chain got no weight to it then there will be no tension if the wheels are spinning at constant speed
__________________
if you are not living on the edge you are taking too much space
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Emerald Physics JonasKarud Multi-Way 51 18th December 2012 11:28 PM
Physics puzzle star882 The Lounge 20 14th October 2007 01:26 PM
speaker box design physics question priscared Car Audio 4 18th November 2005 11:07 PM
Physics question! Nappylady Multi-Way 3 13th May 2005 01:29 AM
physics equations slackerbob Multi-Way 22 15th November 2003 11:49 AM


New To Site? Need Help?

All times are GMT. The time now is 05:13 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2