haruspex's latest activity
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haruspex replied to the thread Will Y-Direction Motion Cease with X-Direction Acceleration Only?.I suggest using the subjunctive here. -
haruspex replied to the thread Collision of a bullet on a rod-string system: query.Ha! Found my error. Missed two terms… Let the post-impact angular velocity be ##\omega## anticlockwise and the speed of the left end...
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haruspex replied to the thread Collision of a bullet on a rod-string system: query.Would you be happy to post your working, in a PM maybe?
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haruspex replied to the thread Will Y-Direction Motion Cease with X-Direction Acceleration Only?.Involves ##\Gamma(1/4)##, right?
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haruspex replied to the thread Collision of a bullet on a rod-string system: query.No, I don’t fix that point. I wrote: I then expressed the motions of the rod and bullet in terms of these: That is, in the lab frame...
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haruspex replied to the thread Collision of a bullet on a rod-string system: query.See post #25.
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haruspex replied to the thread Collision of a bullet on a rod-string system: query.After the impulse, the string ensures that the left end of the rod stays at constant distance from the string's fixed point. This means...
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haruspex replied to the thread Collision of a bullet on a rod-string system: query.Quite so. Not so. Since the left end of the rod will have a speed, it is then describing an arc around the fixed point of the string...
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haruspex replied to the thread Collision of a bullet on a rod-string system: query.@Charles Link I think we are reading the question differently. It asks for the tension after the impact, not the tensional momentum...
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haruspex replied to the thread Angular Momentum- Conserved or not?.OP stands (at PhysicsForums) for either Original Post (but I prefer "post #1”) or Original Poster. In post #1, the OP wrote: "i) I do...
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haruspex replied to the thread Angular Momentum- Conserved or not?.Yes, that seems to be what the problem statement intended, but the OP's attempt (i) did not take it as fixed.
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haruspex replied to the thread Angular Momentum- Conserved or not?.Isn’t that what the OP did in post #1?
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haruspex replied to the thread Angular Momentum- Conserved or not?.I see the wording issue a little differently. In usual terminology , an "axis" is not a physical object, any more than is a line or...
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haruspex replied to the thread Angular Momentum- Conserved or not?.As with linear momentum, it can be conserved in one direction but not in another. With only gravity acting, horizontal linear momentum...
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haruspex replied to the thread Will Y-Direction Motion Cease with X-Direction Acceleration Only?.Whether a feature can be neglected depends on the purpose of the analysis. If you want to know the direction in the limit then the y...