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Cool goIITian

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20 Mar 2008 00:14:03 IST

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1150

Newtons Laws of Motion-H C Verma

None

Q no.-25,31,32,33,34,35

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BALGANESH

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20 Mar 2008 01:23:12 IST

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reply something

Anish Sinha

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20 Mar 2008 01:25:59 IST

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@waterdemon. for q no 28, i didnt understand eqations 2 & 3. pls explain.

Anish Sinha

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20 Mar 2008 01:29:30 IST

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thanx balganesh. it was very important for me. i got that explanation. actually i'm also a slow typer so taking time to reply. thanx again all of u. u were of gr8 help.

BALGANESH

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20 Mar 2008 01:32:26 IST

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yups 34 a has'nt been done do u want i will edit this podt

Anish Sinha

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20 Mar 2008 01:38:00 IST

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ya pls do it balganesh. and also pls hv a look at watrdemon's post on q no 28. i hv requested him to explain eq 2 & 3 but i think he has not noticed. can u pls explain that also?

aNdRoMeDa

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20 Mar 2008 01:44:48 IST

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T - 1*10 = A (!)

20 -T/2 = 2A -2a .............(2)

30 - T/2 = 3A + 3a............ (3)

c m2 n m3 r movin as per mi

so they r relatiev thus

in (2)

mg-tension=2A-2a

here itz (-2a) cozm2 is movin upwards

similarly d equation 3

here y itz 2a n all u knw

n c d tension is T in d upper string n then it gets distributed amogn 2 strings thus ind lower strings it bcums half

thus T/2

BALGANESH

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20 Mar 2008 01:45:01 IST

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for 4 kg

4g -T = 4a1...............1

fro 5kg

-5g + 2 T = 5a2 .........2

a1 = = 2a2 ............3

from these eqns we grt a1 =2g/7 and a2 = g/7

Anish Sinha

Cool goIITian

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20 Mar 2008 01:52:15 IST

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thanx all of u for ur efforts.

waterdemon

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20 Mar 2008 09:56:42 IST

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No problems mate.
You are welcome.

Cheers !!!!!!!!!!!!!!!!

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