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Max Factor

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b) Use an equation to explain why the graph is a curve and not a straight line 1 mark

Yerh I know stuiped q to ask but what did u guys put for the equation?
 

Kearnzo

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GPE = -(Gm1m2)/r

I used. Then just said it curved like that as GPE (is proportional to) 1/r . Hard to explain in words.
 

brendanstacey

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I was r was a variable in the Ep formula - its like 1/x in maths. Therefore its non linear.
 

yorkstanham

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i said as G, m1 and m2 were constants Ep was proportional to 1/r which is a hyperbolic curve.
 

layzeehbum

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i state the GPE equation and then say that dis cannot be a straight line since the equation is not in the form of y=mx+b... (whoops it sounds like im doing a maths paper....)
 

erm

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i just said it was hyperbolic curve according to [insert equation]
 

tommykins

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like the line y = 1/x, it is a curve.
 

lawrence.h

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YES! I am the KING! I thought I screwed up this question. I didn't know what to write so I just went "er...GPE = -(Gm1m2)/r because bla bla GPE is inversely proportional to r and the asymptote is at 0"
something like that. without the blas and the er
 

banks44

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i gave the Ep equation obviously then explained why it was (-)ve because at infinity Ep is considered 0 so anything less than that is < 0
then i explained that nothing can reach infinity so Ep can never equal 0 which is why it had a horizontal asymtote

reckon they'll give that to me?
 

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