Timeline for Conservation of momentum leading to damage
Current License: CC BY-SA 3.0
10 events
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| Dec 18, 2011 at 12:34 | history | edited | Maksim Zholudev | CC BY-SA 3.0 |
added a better example with a basketball and a glass
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| Dec 18, 2011 at 12:24 | comment | added | Maksim Zholudev | @AramKocharyan, momentum is not a sufficient measure of damage. I will change the example with the bullet to more clear one proving this. At least two more magnitudes is needed: rigidity to calculate time and force, and strength to recalculate force to damage. | |
| Dec 18, 2011 at 12:08 | comment | added | BjornW | Actually the introduction in this post about momentum is somewhat misleading as the OP is not talking about momentum in the question, he is talking about the same thing you are (impulse is force during a timestep). But the bottom line, that it is complicated to calculate fractures, is correct of course. | |
| Dec 18, 2011 at 12:01 | history | edited | Maksim Zholudev | CC BY-SA 3.0 |
corrected example with te bullet
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| Dec 18, 2011 at 11:56 | comment | added | Maksim Zholudev | @RonMaimon, probably you are right. I have read this example in a schoolbook long ago but have never seen any experiments. I will correct the post and may be will find a less doubtful illustration. | |
| Dec 18, 2011 at 11:13 | comment | added | Aram Kocharyan | Hmm. I think what he meant was that the time taken to distribute the force has different results. From the formulas I think momentum leads to the force, since a force is essentially the first difference of the momentum. I'm not sure if I'll be able to go into such detail as surface forces and kinetic energy, but I think the impulse (change in momentum) should suffice as a measure of the impact of a collision, no? | |
| Dec 18, 2011 at 11:09 | vote | accept | Aram Kocharyan | ||
| Dec 18, 2011 at 11:09 | vote | accept | Aram Kocharyan | ||
| Dec 18, 2011 at 11:09 | |||||
| Dec 18, 2011 at 10:24 | comment | added | Ron Maimon | A bullet will not open a door? This can't be correct. The momentum of a bullet is enough to recoil on your shoulder with a good shove, sufficient to swing open a door. | |
| Dec 18, 2011 at 9:21 | history | answered | Maksim Zholudev | CC BY-SA 3.0 |