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Bullet and block experiment - Result

Bullet and block experiment - Result

(2:57) Don't watch unless you've seen the experiment and made your prediction: id=37820. Even if you got the answer right, can you explain it?

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WalterEgo WalterEgo (1521 days ago)
I guessed lower because I thought like many others - the rotational energy must come from somewhere. My explanation is that when the bullet hits the block, the energy transmitted upwards is the same on both blocks, so they lift to the same height. The energy transmitted sideways is also the same but in the first block, it is absorbed equally on both sides, so the block does not spin. Did that make sense?
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I guessed lower because I thought like many others - the rotational energy must come from somewhere. My explanation is that when the bullet hits the block, the energy transmitted upwards is the same on both blocks, so they lift to the same height. The energy transmitted sideways is also the same but in the first block, it is absorbed equally on both sides, so the block does not spin. Did that make sense?
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Guest: Shmergen Engineer (1518 days ago)
Latest comment: The reality here is simple. Camera angles are different, but in the conditions they've go it's impossible to measure the height difference accurately enough. The energy required to rotate the block around it's CoG is minuscule compared to the amount needed to take it to that altitude. The confusion is caused simply because people aren't quite understanding the disparity between the two amounts of energy required.
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Latest comment: The reality here is simple. Camera angles are different, but in the conditions they've go it's impossible to measure the height difference accurately enough. The energy required to rotate the block around it's CoG is minuscule compared to the amount needed to take it to that altitude. The confusion is caused simply because people aren't quite understanding the disparity between the two amounts of energy required.
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Guest: TheMaldonian (1519 days ago)
Who actually gives a monkey's? Seriously. Jeesh. Guns and yanks.
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Who actually gives a monkey's? Seriously. Jeesh. Guns and yanks.
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Guest: Dafuuuuuq (1521 days ago)
Of course they are the same height. They are accelerated equally and the center of mass of the block is in the same place in both scenarios, so the rotation has no impact.
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Of course they are the same height. They are accelerated equally and the center of mass of the block is in the same place in both scenarios, so the rotation has no impact.
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Tsuki Tsuki (1521 days ago)
If they did to me, I would jump much higher!
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If they did to me, I would jump much higher!
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Guest: (1520 days ago)
i bet its different if you shoot the block on the left.
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i bet its different if you shoot the block on the left.
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