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Thermal Physics

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11 Jul 2009 13:44:25 IST

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A metal sphere is dipped in water is heated, how upthrust will change with increase in temperature?

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A metal sphere is dipped in water is heated, how upthrust will change with increase in temperature?

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BALGANESH

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Joined: 21 Dec 2007

Posts: 1025

11 Jul 2009 13:49:53 IST

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when u heat then the mettalic sphere expand there by volume increasesupthrust= mg - V*ro* g, here V increasesso upthrust decreases

Sagar Saxena

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Joined: 8 Oct 2008

Posts: 7221

29 Aug 2009 16:09:23 IST

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sphere on heating will expand and thus its density will decrease on increase of volume.........

and if we consider density of water to be constant thn thrust acting on it will be = volume(of sphere)*density of water*g

thrust will increase.........

but if water's desity is also also changd thn situation will change and we have to calculate it.............

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