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Rach_69

Higher Physics

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Does anyone know the formula for buoyancy as i dont seem to be able to find it

i know its p= (roe) gh for the top and then the bottom but what else is to it?

My exam is at 1 :down:

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To find the upthrust you take the pressure at the bottom away from the pressure at the top (using p=roe g h to find the pressure) Then the difference in pressures is the upthrust... or at least i think thats it...

xxx

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Well its the only thing you need to work out as far as boyancy force is concerned.. however, sometimes they can be pretty sneeky and decided to change it into an unbalanced forces question, in which case all you need to do is use fun=m x a and just remeber that weight is a force as well. Any more questions?

xxx

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in which case all you need to do is use fun=m x a and just remeber that weight is a force as well. Any more questions?

xxx

or as st machar standard grade physics class used to call it

fun= yer ma... :rolleyes:

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You just make it too easy lass :p

EDIT: Good luck in the exam mind :)

i didnt even think of that!

guh!

thanks very much for the help

the exam wasnt as hard as i thought it would be but i still dont think i did too well in it

ah well, only the prelim but that means ive still got the real thing to go in May :(

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i didnt even think of that!

guh!

thanks very much for the help

the exam wasnt as hard as i thought it would be but i still dont think i did too well in it

ah well' date=' only the prelim but that means ive still got the real thing to go in May :([/quote']

don't worry, i'm not even going to bother

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