Will elevation have a noticable effect on weight? in particular, will an object weighing 131 ounce at 1000 ft weigh less, 123 ounces at 4500 ft?

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• THis equation doesnt simplify to R=-h for g'=0,
  or rather you have no gravity at the centre of the earth

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  by Jahono on August 17th, 2009

• This is "Height" equation i.e above teh surface of earth.,not the depth equation below the surface of earth.Both are way different
  The depth equation is g'=g(1-d/R).
  
  This would give you the gravity at centre of earth.

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  by engineer is Terminator on August 17th, 2009

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• It's more likely just a discrepancy between the calibration of the scales used to measure your object in Troy and Las Vegas.

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  by TempeteCoeur on April 28th, 2009

• 7 ounces is a pretty large discrepancy

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  by Jahono on August 17th, 2009

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• Only slightly. And that stops once you start going below the crust of the Earth. As you approach the Earth's core, the only part of the Earth having a gravitational effect on you is the part contained within a sphere of your current radius. So since the relevant mass goes down by a factor of r^3, and the denominator of the gravitational equation (F_g = G*m_1*m_2/r^2) is r^2, gravity decreases linearly with your depth.

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  by TempeteCoeur on April 28th, 2009