Re: help please

In article <1145141570.544470.269420@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, "vaibhav.netkar" <vaibhav.netkar@xxxxxxxxx> wrote:

hi John

thanx for the early reply

is energy along a curve minimum
or i simply have to check wether x(first)=x(last)
for closed curve condition

even then kindly let me know of the formula for energy along a curve

regards

vaibhav.netkar

Yes, as I said, the first and last points must be
equal. But if you are generating the curve, I would
have thought you would know if the ends were
replicated.

The formula for energy? What energy? What form of
curve have you chosen? Is this stored potential
energy in a thin beam due to bending that you refer
to? If the curve is a piecewise cubic of some sort,
perhaps spline, or pchip, as generated by interp1,
then you will need to form an integral of f''(t)^2
for each of the x(t) and y(t) models. (An interesting
question is if the sum is indeed a valid prediction
of the potential energy due to bending in the beam.
I'll need to think about it.)

HTH,
John


--
The best material model of a cat is another, or preferably the same, cat.
A. Rosenblueth, Philosophy of Science, 1945

Those who can't laugh at themselves leave the job to others.
Anonymous
.

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