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Old Sep 19th 2018, 09:40 AM   #1
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Force on object moving on a curve

I'm not sure how to approach this problem. We never went over problems like this in class.
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Old Sep 19th 2018, 01:59 PM   #2
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Curve tangent and normal

You have to determine the unit vectors normal to the path.

Set a function as, phi = x^^2 - 2by

Now grad(phi) = d(phi)/dxi + d(phi)/dyj
Then, n = grad (phi)/ |grad(phi)|
and for t, swap the n coefficients i and j.

Goes something like that....
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