i have to do the lab on hooke's law .. i have added the graph & data table to attachment.(adsbygoogle = window.adsbygoogle || []).push({});

1st: Using graph determine the relationship between the F and X, expressing it both as a proportion and an equation. ( I know tht the realtionship is Hooke's law F=KX. But i don't if to use F=KX or f=-kx ?? ) and how do i explain from the graph? ( i know how to find in questions but not in graphs)

2nd: use graph to find X when force is 0N, 8N and 16N.

I am getting for 0 N, X=0 m . For 8N, X= .51m. For 16N i don't know how to find it. Do i just look up in the graph to see where it ends? but then it ends at 13.72N so don't know how to find X for 16 N

3rd: Use equation to find X when force is 0N, 8N and 16N. now, the problem is tht i don't know the K and X . so i can't use F=mg =kx. cauz i don't know k and x. so how do i find both of them? do i use F or X from the graph? i have givin mass so do i use tht?

4th: I have to find Ee, when it is held extended by a 10 N force.. Ok for this i know F=10 N. X=0.64 ( looked from graph if i am right?) now to find Ee I have to find K first right?

so i tried to find using kx=mg .. but now question is that what mass i am goin to use? or do I see the graph at 10N & see X which is 0.64m ? it's confusing cauz it says tht i have to use equation to find it.

i have tried to do these question & have listed the answers of some of them.. but i am not sure if it is right or not. someone plz answer this questions.

thx

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# Homework Help: One tough question,find X from graph & equation

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