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I'm writing up a physics lab report on centripetal force; at the moment I've hit a problem with the velocity squared vs. radius graph. The graph *should* show a root curve (v^2 = Fr/m) but all of the regression utilities I've used churn out an exponential curve. Here are the four points I have:

Radius (m)

0.25

0.5

0.75

1

Velocity Squared (m^2/s^2)

43.52321446

105.3350938

174.1416131

227.3593065

Adding to the enigma is the fact that my velocity vs. radius graph, which should also show a root curve, actually DID. All I did to the velocities was square them for the v squared graph.

Any idea what's going on?

Thanks!

Pat

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# Homework Help: Root Regression Problems

**Physics Forums | Science Articles, Homework Help, Discussion**