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![[Post New]](/templates/default/images/icon_minipost_new.gif) 20 Mar 2008 18:51:53 IST
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A gardener waters the plants by a pipe of diameter 1 mm. The water comes out @ 10 cc/s. Find reactionary force exerted on the hand of the gardener.
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20 Mar 2008 18:53:59 IST
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akhil has solved the prob
http://www.goiit.com/posts/list/mechanics-variable-mass-45010.htm
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"I a universe of atoms.......an atom in the universe" |
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20 Mar 2008 19:11:56 IST
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bro how did akhil get the value of velocity
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20 Mar 2008 19:14:47 IST
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area*velocity= 10 cc/s...
area we have from the diameter
so velocity is calculated
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" Always remember money isn't everything but make sure you have made a lot of it before talking such nonsense!"
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20 Mar 2008 19:15:43 IST
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tanx
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20 Mar 2008 19:16:19 IST
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in case you dont know this
volume rate of flow=area*velocity [ its obvious]
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"I a universe of atoms.......an atom in the universe" |
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20 Mar 2008 19:16:44 IST
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@ ganesha:
consider lik this...let the water move linearly thru a dist x...
now the vel will be dx/dt
v know tht in 1 sec volume of water flowing thru pipe is 10cc
so dV/dt=10
but V=A*x where A is cross-sectional area n x is the dist mopved linearly(picture it lik a cylinder)
so dV/dt=A.dx/dt
so v get the velocity
n then v use thrust force =vdm/dt 2 solve the prob
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Nitwit Blubber Odment Tweak
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