24Q1
for every 1s revision and time pass[3]
1.the the shape of an ancient clock jug is such that water decends at constant rate at all times .....
if it falls by 4cm per hour ......
determine the shape of the jar(relation between y and x) ...
the radius of drainhole is 2mm and very small compaired to x !!!!!
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23 Answers
24yuup[1]................its truth[3][3]............main to chem ko jugaad kehta hoon.......har question mein naya concept lagta hai.....[9][9]khaskar inorganic mein..[9]
33oh.. din saw yaha chem ki bejjati karni hai....
maine mauka kasie gawa diya... [2]
waise mera signature kafi hai uske liye.. ;)
33apply bernaullis theorem..
F/A=Ïv2/2
or cheat it from here v=√2gh
1ha or subject chem na hone ki wajah se answer dono se aa raha hai ..
[4][4]lol
33Eureka... same chiz hai.. bas language and approach alag hai....[3]
33Q.2
work done is always ∫F.dx
here F is constant..
so W=F.L
we have to find L
velocity of water is v=√2F/ÏA .... A is area where force is apllied...
Volume V is emptied in time t so V=ts√2F/ÏA
V=AL
AL=ts√2F/ÏA
L=ts√2F/ÏA3
Put A=V/L
L=ÏV3/t2s22F
therefore W=FL=ÏV3/2t2s2
24oya hoye[3][3][3]............priyam bhai post kar chuke hain[3][3].............main bhi shaam se wait kar raha tha ki koi aur post kare .......maine ab post kiya aur priyam bhai ne bhi ab...........par hamare soln alag hain.........cheers[1]
3JUST TRYING TO CONTINUE INITIATIVE STARTED BY EUREKA!!!!
Q1.y = 0.4x4
soln. will be posted by tommorow ... in case no one attempts [2]
33Q.1
velocity with which water leaves.. =√2gy
dV/dt=rate of decrease of volume= a√2gy ....(i)
Volume decreased in time dt =Ï€x2.dy
dV/dt=Ï€x2dy/dt ...(ii)
dy/dt=k..(given =4cm/hr) ....(iii)
therefore from (i) (ii) (iii)
a√2gy=kÏ€x2
squaring and rearranging.. we get
y=(k2Ï€2) x4
2ga2
where k=4cm/hr
a=2mm
~~~ [1]
3thanxx yaar [3] ........ nish bhiyya put it up as QOD....he said u too deserved sum of ur questions to be put up but at that time this facility was nOT available!!!!!
62post on a seperate thread tomorrow :)
We will put it as another QOD if it si good... btw Priyam deserved atleast a few QOD's but then this feature was not there :)
3
Q2.ASSUME IDEAL CONDITIONS AND FIND WORK DONE IN PUSHING ALL LIQUID OUT IN TIME t..................
ÏV3/2S2t2