Mechanics - rotation

1

Bicchuram Aveek ·2010-03-15 01:44:54

30 ) A

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Bicchuram Aveek ·2010-03-15 01:45:07

30 ) A

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Bicchuram Aveek ·2010-03-15 01:53:19

31) A

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Bicchuram Aveek ·2010-03-15 01:54:21

Anirudh can u pls verify my answers for now ???
If it is correct...i'll post the soln.

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Bicchuram Aveek ·2010-03-15 02:03:13

KYA RE ANIRUDH !!! SUM DE KAR BHAG GAYA KYA ???? {:-(

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1

Great Dreams ·2010-03-15 02:13:10

answer is right
quite an easy one
dx=rw.dt
now integrate

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Great Dreams ·2010-03-15 02:14:23

the second one is like hcv example problem
just replaced by groove instead of rod

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Manmay kumar Mohanty ·2010-03-15 02:35:32

F X R =12 MR²\alpha

= 12 Ma
F = 12 Ma â†’ a = 2g

v² - u²=2as
u = 0,
v=\omega R
a=2g
S = length of string.
now substitute , we get S = \omega^{2} R^{2}/4g

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Anirudh Kumar ·2010-03-15 05:17:56

sorry aveek. that was not intentional .
thanks manmay and gr8dreams
30) A
31) A

please solve 31 one

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Bicchuram Aveek ·2010-03-15 07:22:22

conserve angular momentum about the centre of rod and it's done.

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