E-StoreHome » Ask & Discuss » Physics. » Mechanics « Back to Discussion
Mechanics
22 Dec 2007 14:40:33 IST
0 People liked this
28
2329
Comments (28)
Pawan Bisht
Cool goIITian
Joined: 29 Apr 2007
Posts: 64
27 Feb 2008 21:37:52 IST
Like
0 people liked this
dude!!!!! Forget all the damn pictures and stuff....jst listen to simple stuff........friction in forward tyre would be in reverse direction and in backward tyre would be in forward direction.....frictional forces would be towards each other........resons resons??????
resons are simple tht if frictional force is in forward direction in forward tyre then while riding a bike the bike will stop and so friction must be in reverse direction...........Lemme tell all those people who says tht in cycle forward tyre will have forward friction....................DUDES in cycle when we push the pedal we only have control of our backward tyre and we exert force only on backward tyre......thr front tyre jst moves because of backward tyre moving......WE DO NOT APPLY ANY FORCE ON FORWARD TYRE BY OURSELF.......ITS THE BACKWARD TYRE WHICH IS APPLYING FORCE TO GROUND AND IN TURN FRICTION IS HELPING THT TYRE TO MOVE SO...... ITS CLEAR NOW THT IN BACKWARD TYRE WE HAVE FRICTION IN FORWARD DIRECTION AND IN FORWARD TYRE IN REVERSE
Reply
28 Feb 2008 13:42:36 IST
Like
0 people liked this
every one were right to some extent
inzee was totally right
but the most basic thing which can be said is thad friction will oppose the tendency of motion of the lowermost point which is momentarily at rest.
so this explains every concept of the bike problem..........
the problem comes when the bike is on an incline..........
just remember............whether the bike moves up the incline or down the incline the friction will always be up the incline
reply if u want to me to explain this to u.............
i would need diagrams to do so..........
inzee was totally right
but the most basic thing which can be said is thad friction will oppose the tendency of motion of the lowermost point which is momentarily at rest.
so this explains every concept of the bike problem..........
the problem comes when the bike is on an incline..........
just remember............whether the bike moves up the incline or down the incline the friction will always be up the incline
reply if u want to me to explain this to u.............
i would need diagrams to do so..........
29 Feb 2008 19:36:10 IST
Like
0 people liked this
okay, i'd like to get a thing clear here.
this is not the real situation wherein the cycle stops on its own. here, we discuss an ideal situation, and in such a situation, its not possible for a cycle to stop on its own (without your external forces acting on it, except friction).
in the real situation, the wheels are not perfectly circular, but slightly flattened at bottom. this sets up an anticlockwise torque that tends to stop the cycle.
Free Sign Up!
Preparing for IIT-JEE ?
Arihant Revision Package for IIT JEE - Books, Practice Tests + Rank Predictor
@ INR 1,995/-
For Quick Info
Find Posts by Topics
Physics.
Topics
9384
20062
3670
2185
7602
2826
2633
Mathematics.
Chemistry.
Biology
Institutes
Parents
Board
Fun Zone
|
|
|
|
|
| 35,229,755 Engineering Questions Attempted |
6,69,530 Visitors Monthly |
79 Engg. Exam Covered |
1242 Students Currently Online |
Connect with Us  |
 |
Vriti Communities
Privacy Policy © Vriti 2011