Find the curvature of r(t)=<5 cos t, t , 5 sin t> at the point(5,2Pi,0)

Is there a formula to calculate this I cannot seem to find it.

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- Apr 28th 2009, 07:32 AMur5pointos2slocurvature
Find the curvature of r(t)=<5 cos t, t , 5 sin t> at the point(5,2Pi,0)

Is there a formula to calculate this I cannot seem to find it. - Apr 28th 2009, 12:35 PMCalculus26
The general formula is k = |dT/dt|/|dr/dt| where T is the unit tangent

You should get 5/26

For a general discussion of curvature and why this formula works see my website

Unit Tangent Vectors/Unit Normal Vectors