I have attached a pic which really explains the formula and context of the problem.(adsbygoogle = window.adsbygoogle || []).push({});

I'm guessing a gravitational effect passes for physics....

I am trying to convert the formula in (b) below into feet.

If I could reproduce the answer with English units, I could move on and apply the formula to other situations, but the multiplicity of English units is really confusing me.

The English units I have are;

g = 32.17405

x = 3277.972

Next two from my tapes manufacturer,

A = 0.003" (but I think it should be 0.034 feet)

E = 29,700 KSI

M = 0 but could be 20 lbs.

Next one again from the manufacturer,

m = 0.0102 lbs/ft.

l = 3280.84

P(sub)0 = ? but my hundred foot tape would be 23 lbs.

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# Gravitational elongation formula conversion from SI

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