| Author |
Message |
![[Post New]](/templates/default/images/icon_minipost_new.gif) 21 Aug 2008 18:54:32 IST
|
|
|
how friction is =0 in pure rolling
|
|
|
|
21 Aug 2008 21:34:13 IST
|
|
|
friction is nt eqaul 2 zero in pure rollin wheras friction is necessary for pure rollin ....or else it wud b slidin .......
correct me fif i m wrng
|
don't walk as if u rule d world
walk as if u dont care who rules d world
-this is knw as attitude
B who u r and say wat u feel ......
coz those who mind don't matter ........
and those who matter dont mind ......... :)
|
this reply: 0 points
(with 0 
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
21 Aug 2008 21:41:44 IST
|
|
|
yea...true... friction is indeed necessary....it acts in the direction of motion... i.e. forward
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
22 Aug 2008 12:38:44 IST
|
|
|
yeah the rolling of a body need friction for proper movement n direction
else it just glides down the surface if friction=0
so in this case of pure rolling also friction is necessary
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
22 Aug 2008 23:11:55 IST
|
|
|
i think its zero howsoever.
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
22 Aug 2008 23:19:02 IST
|
|
|
the cond of pure rolling is V = Rw .
this is possible only when friction is zero. Else we will get either forward english or backward english.
|
it is not important where u stand, but in which direction u are moving |
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
23 Aug 2008 00:22:38 IST
|
|
|
Friction is required to initiate pure rolling ( so that relative velocity of point of contact of the body at the ground wrt ground is 0), and after that there's no relative motion of point of contact, hence friction ceases to exist (as friction only exists to oppose relative motion)
|
---------------------------------------------------------------
- Gaurav Ragtah (spideyunlimited)
|
this reply: 2 points
(with 0
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
24 Aug 2008 10:29:34 IST
|
|
|
on a frictionless floor if i give the velocity such that v=rw
then it will roll without slipping forever
so friction is not necessry if this velocity is given
but for any arbitrary velocity the friction is necessry to make the body roll without slip
|
this reply: 2 points
(with 0
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
Moderation Team
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
