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Discussion of Problem 1359. Construction

Why I have t=0.7691 on example test?
Posted by Kirin Vladislav 2 Oct 2006 12:23
I have calculate time by formula t=sqrt(2*s/g) there s - distance and g - changing speed (g=10m/c^2). Distance I have calculate by trapezium method. I have distance for this test s=2.9578. There is wrong?:-(
Re: Why I have t=0.7691 on example test?
Posted by Kirin Vladislav 4 Oct 2006 16:41
I find where I made mistake - in idea of solution: traectory of moving barrel is not a parabola, it's a cycloid. But I have next problem - what is formula of cycloid?

Edited by author 04.10.2006 16:43


Edited by author 04.10.2006 16:45