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Mechanics

Scorching goIITian

 Joined: 28 Feb 2007 Post: 287
16 Mar 2007 23:07:34 IST
0 People liked this
8
851
circular motion
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Blazing goIITian

Joined: 18 Dec 2006
Posts: 307
16 Mar 2007 23:09:40 IST
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angular velocity=omega=v/r!!

Scorching goIITian

Joined: 28 Feb 2007
Posts: 287
16 Mar 2007 23:10:54 IST
0 people liked this

well...thats what even i thought...but the correct answer is (b)...i need 2 know y???

Cool goIITian

Joined: 31 Dec 2006
Posts: 31
17 Mar 2007 07:56:01 IST
1 people liked this

angular velocity is v/r from centre of circle not from pt on the circle
the pt can b fixed anywhere on circle so lrt us fix it at diametrically oppo. to body executing motion. Now body moves with radius 2r wrt that pt.
so
= v/2r (considering initial motion of body pure rotatory wrt fixed pt.)

Blazing goIITian

Joined: 7 Mar 2007
Posts: 784
17 Mar 2007 11:32:32 IST
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well jalanshruti the particle will move about any point on the circle with radius as 2r if its is always diametrically oppo.to the fixed point .but the case is diff.

Here is correct solution.
Let the angular velocity of any body in circular motion be  about the center of circle .but d/dt of the particle about any point on the circle is equal to /2(any arc subtends
on the centre twice the angle subtended at any point on the circle )

Cool goIITian

Joined: 17 Feb 2007
Posts: 62
17 Mar 2007 12:09:42 IST
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=V/R

WHERE R IS THE RADIUS OF THE CIRCLE

HERE R=2r
SO    =V/2r

PLS RATE

Scorching goIITian

Joined: 28 Feb 2007
Posts: 287
17 Mar 2007 19:10:07 IST
0 people liked this

hey kislay...i think ur right...i never thought of this in that way...plz tell me have u done this earlier and i'll give u a salute...

Blazing goIITian

Joined: 7 Mar 2007
Posts: 784
17 Mar 2007 19:18:19 IST
1 people liked this

no prateek i had not done that before.pls rate!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Scorching goIITian

Joined: 28 Feb 2007
Posts: 287
17 Mar 2007 19:20:53 IST
0 people liked this

thnx man...rated u...

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