TSny's latest activity
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TSny replied to the thread Some work on MTW Figure 25.7.For online calculation of the incomplete elliptic integral ##F[\phi, m]##, where ##m = k^2##, see this site at WolframAlpha. The link... -
TSny replied to the thread Some work on MTW Figure 25.7.I don't see much difference between the MTW (Darwin) calculations and your calculations using ##r_1, r_2, ## and ##r_3##. Darwin shows...
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TSny replied to the thread Some work on MTW Figure 25.7.The relations between the three root ##(r_1, r_2, r_3)## and the quantities ##R## and ##Q## are given in the paper by C. Darwin...
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TSny reacted to Steve4Physics's post in the thread Which material will stop magnetic attraction? with
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YouTube is your friend (with music)! CLick here. Interesting point. I think the diagram captures the main effect – the re-routing of... -
Perhaps, but I don't think so. The real force in this case is static friction which adjusts itself to provide the observed acceleration...
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TSny replied to the thread Graduate Another derivation from Quantum Fields on curved spacetime.From ##t = \alpha \sinh(\tau/\alpha)##, we have ##z = (t^2 + \alpha^2)^{1/2} = \alpha \cosh(\tau/\alpha)##. Use these to express the...
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TSny replied to the thread A rocket and the Coriolis acceleration.Yes, the Coriolis force is toward the right. In the video below, you can see that when the rotating frame rotates counterclockwise...
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Thanks to your nice drawing it is clear what's what. To @brotherbobby: The cross product vector ##\mathbf {\Omega}_0\times \mathbf...
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TSny replied to the thread A rocket and the Coriolis acceleration.Yes, I agree that the x-axis as drawn is bad. The x-axis (toward the east) should be into the page (perpendicular to the y-z plane)...
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TSny replied to the thread A rocket and the Coriolis acceleration.Your work looks correct to me (except, as pointed out by @kuruman, ##m## should not be in your expression for the acceleration). I...
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TSny replied to the thread Electric potential due to shell containing a charge at an offset outside.Looks good. Recall @haruspex 's comment: If the charge, ##-q##, on the inner surface were uniformly spread, what would the potential...
