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Electricity

Blazing goIITian

 Joined: 8 May 2012 Post: 466
19 May 2012 18:08:02 IST
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6
351
torque
Engineering Entrance , Medical Entrance , AIPMT , JEE Main , AIIMS , JEE Advanced , Physics , Electricity

torque=r*F

when a dipole is placed in uniform electric field E.it experiences a torque,but no force????????????????

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
19 May 2012 18:28:59 IST
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net force is zero bt due to different line of action of force torque produced

Blazing goIITian

Joined: 8 May 2012
Posts: 466
19 May 2012 20:26:53 IST
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thanxx,i'm a silly fellow ,i struggle even for this simple questions

New kid on the Block

Joined: 9 May 2012
Posts: 2
20 May 2012 00:59:00 IST
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force dont act there

New kid on the Block

Joined: 9 May 2012
Posts: 2
20 May 2012 00:59:01 IST
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force dont act there

New kid on the Block

Joined: 20 May 2012
Posts: 4
20 May 2012 17:34:44 IST
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if f is 0 than torque= d*0=0

Blazing goIITian

Joined: 22 May 2009
Posts: 2467
22 May 2012 01:19:31 IST
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hello dear

moment of force  is the tendency of a force to rotate an object about an axis

while considering the toque,keep in mind the direction of a torque ,it can be clockwise or ati clockwise

$\boldsymbol \tau = \mathbf{r}\times \mathbf{F}\,\!$
$\tau = rF\sin \theta\,\!$

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