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![[Post New]](/templates/default/images/icon_minipost_new.gif) 8 Feb 2008 21:58:59 IST
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this ques has boggled my mind .......
shud i post the ans????????
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8 Feb 2008 22:03:27 IST
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yep post it
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"Imagination is more important than knowledge."
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8 Feb 2008 22:08:24 IST
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A-p
b-r
c-q
d-s
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dont worry .
be happy and positive
nd nvr stop bcz life cant wait.
nd watever happens keep smiling bcz log haste huye btr lagte hain.try to fight wid d situation
nd tc of urself bcz u r spl to someone out dere |
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8 Feb 2008 22:10:52 IST
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very good aanchal correct ans
now wud u mind explaining the ans to me????????
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warning:i ll try explaining u,bt iam vry bad at explaining
a- 1st option
atwood machine
pulley mass neglected
only mass hanging considered so a constant force
B-as in gun wen bullet leaves it applies impulse wich is time independent
c-in van de graff generator as electric field produced in shell depends on r
d-in galvanometre produced depend on flux
wich changes wen velocity changes
as torque changes
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dont worry .
be happy and positive
nd nvr stop bcz life cant wait.
nd watever happens keep smiling bcz log haste huye btr lagte hain.try to fight wid d situation
nd tc of urself bcz u r spl to someone out dere |
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8 Feb 2008 22:42:06 IST
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But in van de graff, the electric field also keeps increasing as time passes, so it shud be time dependent also.
And in gun case, the impulse also depends on the velocity of bullet fired, so it shud be velocity dependent also.
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8 Feb 2008 22:42:29 IST
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See dude I think we are going to learn about the atwood machine some time later...
I guess it is a pulley system which gives a constant force(some D Alembert's principle~that's what i heard on the phone when i called my father!!).
Next as for gun the force depends on the elongation of the spring hence time dependent !!
As for Van De Graff's generator I know only the principle,i know this much that if a a charged conductor is brought in contact with a hollow conductor then the charge is transferred to the hollow conductor.So that's position dependent force.
For galvanometer the current in the coil produces a magnetic field which exerts a torque.Now you can bring in the concept of drift velocity into it.I think this question is a little too difficult for us!
and there can be other arguments also.
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8 Feb 2008 22:48:35 IST
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gr8dreams.
what about my doubts?
I think my doubts are also logical.
What explanation do U hav for them?
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The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.
It is during our darkest moments that we must focus to see the light.
Check out my blog at:
http://tarinbansal.blogspot.com/
Posts:
Can marks really judge a student??
Some myths about Chemical Engineering.
(A must see for every student)
Back to goiit, this time with Baby Veerappan. :D |
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8 Feb 2008 22:50:35 IST
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8 Feb 2008 22:54:54 IST
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okay thanks guys i am quite satisfied !!!
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8 Feb 2008 23:04:38 IST
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yaar somebody plz clear my doubts also-
But in van de graff, the electric field also keeps increasing as time passes, so it shud be time dependent also.
And in gun case, the impulse also depends on the velocity with which the bullet is fired, so it shud be velocity dependent also.
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The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.
It is during our darkest moments that we must focus to see the light.
Check out my blog at:
http://tarinbansal.blogspot.com/
Posts:
Can marks really judge a student??
Some myths about Chemical Engineering.
(A must see for every student)
Back to goiit, this time with Baby Veerappan. :D |
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