Charles Link's latest activity
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Hey all. Looks like my 15 year anniversary of joining PF happened yesterday (while my internet was down). Just wanted to say thanks to... -
Charles Link replied to the thread Collision of a bullet on a rod-string system: query.Item of interest is that I was logged off of PF earlier the other day, so that when I viewed this thread, I got an AI summary of the...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.It works for the case where there are no torques, but the expression for the torques gets much more complicated with any accelerations...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.One comment to the above is by attaching the observation point to the rod, it is now in an accelerated frame. If you keep the...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.It may be worth mentioning that as odd as angular momentum can be there is the case where we get the same results from all of the...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.To add to post 64, it may be worth mentioning the center of percussion. If you have a door swing on a hinge or are swinging a baseball...
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Charles Link reacted to kuruman's post in the thread Collision of a bullet on a rod-string system: query with
Like.
Indeed. This problem was educational for me in that it jarred me out my complacency of "having seen it all." -
Charles Link replied to the thread Collision of a bullet on a rod-string system: query.It might be worth taking an extra look at what we have observed in this problem from working it from a couple of different reference...
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Charles Link reacted to haruspex's post in the thread Collision of a bullet on a rod-string system: query with Like.
ok, thanks for checking it all out.
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.They solved for ## u ## using ## \cos{\theta}=1/3 ##. (Their result does agree with what we both got). I anticipate that's why there is...
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Charles Link reacted to kuruman's post in the thread Collision of a bullet on a rod-string system: query with Like.
This problem is from the Indian National Physics Olympiad – 2020. A "tentative" solution appears here on page 15.
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Charles Link reacted to haruspex's post in the thread Collision of a bullet on a rod-string system: query with Like.
Yes, the point of attachment moves, but my reference point doesn't. Let’s say there is a mark on the table at P. That is my reference...
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Charles Link reacted to haruspex's post in the thread Collision of a bullet on a rod-string system: query with Like.
I'll say it again: my reference point for the angular momentum calculation is fixed. It is the point in space where the attachment...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.an update to my post 46 that I just included an "Edit": I recomputed ## u ##, and I now agree with @haruspex post 45 result for ##...
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Charles Link replied to the thread Collision of a bullet on a rod-string system: query.In post 31 @haruspex seems to offer a solution to what occurs after the impulse response. The discussion though focused mostly on the...