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![[Post New]](/templates/default/images/icon_minipost_new.gif) 1 May 2008 17:49:13 IST
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can two frictionless bodies apply force on each other?explain
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1 May 2008 17:55:31 IST
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FIRST THING HTERE CON BE NO FRICTIONLESS OBJECTS
AND IF THERE IS THEY WILL EXERT NORMAL OR CONTACT FORCE ON EACH OTHER .
FRICTIONAL FORCE WILL ALSO BE APPLIED BUT ITS MAGNITUDE WILL BE 0
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1 May 2008 18:12:41 IST
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the question is theoritical.so no question about frictionless bodies.but wheres the ans in the reply.
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1 May 2008 18:17:07 IST
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Of course there can be....
a very direct answer....... there's gravity
and then, friction is one manifestation of the contact force which is an electrostatic force..... the normal component may exist despite the tangential component-friction, being a null vector...
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5 May 2008 12:58:02 IST
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i m trying to explain with a example.
assume a wedge on which a block is kept .let all the surfaces are frictionless then the wedge moves away as the block applies a force mgcos on the wedge and the wedge applies a newton reaction force called normal.so i agree with v sabarish that gavity is the force (in this case its component ).
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5 May 2008 13:00:38 IST
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Yes they can..just that there will be no frictional force .
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5 May 2008 14:29:22 IST
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YES
LET A BOX IS KEPT OVER A BIG BOX....THEN THERE WILL BE NORMAL FORCE BETWEEN THEM BUT NO FRICTIONAL FORCE THOUGH....BUT OFCOURSE THERE WILL BE REPULSION FOR THE GRAVITY FORCE.....
YES THEY CAN EVEN EXERT FORCES LIKE ELECTROSTATIC FORCES ON EACH OTHER...
@@@hav a chillin time@@@
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5 May 2008 16:09:50 IST
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yes
let there be one block kept over the other.let the resting surface be frictionless.now let an external force pull the first(block in contact with the resting surface)now the upper block will resist any relative slipping between them so it will apply frictio in the direction opposie to the dir. of the ext.force.since itis a act.react.pair.the lower block applies friction on the upper in the direction of the ext.force and they both move together
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5 May 2008 16:50:24 IST
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they will man ,,,,,,,,,,,,,,,,
the nucleus of one willl exert atrractive huge force on es of other surface,,,,,,,,,,,,,,,
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5 May 2008 20:46:43 IST
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@ sinha, according to the question, the two bodies r frictionless, then how can they exert frictional force on one another and if there is no friction, then how will they move together?
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5 May 2008 21:21:07 IST
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no there cannot be exactly frictionless bodies. if they are then their forces will be perpendicular to each other
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