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Mechanics

Cool goIITian

 Joined: 27 Nov 2010 Post: 44
17 Jun 2011 09:42:52 IST
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a cubical box is to be constructed with iron sheets 1 mm in thickness.what can be the minimum value
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a cubical box is to be constructed with iron sheets 1 mm in thickness.what can be the minimum value of the external edge so that the cube does not sink in water.given density of iron=8000kg/m3 density of water=1000kg/m3

Blazing goIITian

Joined: 22 May 2009
Posts: 2467
19 May 2012 13:31:41 IST
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The buyont force =Weight of the body

6*a^2*t*8000=a^3*1000

a=48*t

a=4.8cm

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