https://gdpark.blog/tags/math/Recent content in Math on gdpark.blogHugoenMon, 06 Nov 2017 00:00:00 +0000https://gdpark.blog/posts/classical-mechanics-18-radius-of-gyration/Sun, 18 Jan 2015 00:00:00 +0000https://gdpark.blog/posts/classical-mechanics-18-radius-of-gyration/Breaking down what the radius of gyration k actually is — why we square distances, what dividing by mass really does, and how k is just the mean of squared distances laid bare.https://gdpark.blog/posts/classical-mechanics-22-the-inertia-tensor/Tue, 20 Jan 2015 00:00:00 +0000https://gdpark.blog/posts/classical-mechanics-22-the-inertia-tensor/A casual, honest walkthrough of finally grokking the moment of inertia tensor — what tensors actually are, why they’re ‘absolute’, and how the matrix form works.https://gdpark.blog/posts/classical-mechanics-27-angle-between-the-ellipse-axis-and-the-x-axis/Mon, 06 Nov 2017 00:00:00 +0000https://gdpark.blog/posts/classical-mechanics-27-angle-between-the-ellipse-axis-and-the-x-axis/Finally worked out the actual derivation for the angle ψ the ellipse’s major axis makes with the x-axis — something my textbook just handed me without proof and I never questioned until now.