Kind: captions
Language: en
All right, let's watch it. Hopefully I'm
not horribly wrong.
Derek's giggling to himself right now.
Okay, you have made your prediction. Now
it's time to find out which block went
higher. The one that shot off center or
the one that shot right into the center
of mass. Okay, we're just getting set
for shooting straight into the block.
How you feeling about this one, Dave?
I think this is the one. I really do.
Okay, range is going hot in three, two,
one.
We've moved this block. So now the gun
is actually firing into the right side
of the block. So presumably one imagines
that the block will spin anticlockwise.
3 2 1
[music]
Now, check out the high-speed footage.
You can clearly see that both blocks go
to the exact same height, even though
one is rotating. [music] And that's a
bit strange because they were both hit
by the same type of bullet from the same
rifle. So, presumably, it had the same
kinetic energy. And they both [music] go
the same height, so they both have the
same gravitational potential energy. But
one is rotating and so it has that
[music] additional rotational energy. So
one block has more energy than the other
block.
I don't know if I buy that, Dr. Mueller.
Yeah, talk talk to me.
Yeah. I mean, so you're telling me you
just created energy?
Not necessarily created energy. So So
what do you think in there?
Uh I am potentially surprised. [music]
Is it the same height?
Speed footage.
Obviously, I'm wrong.
They they went up to the same height,
which is incredibly confusing to me.
Why is that confusing?
Because that doesn't Where's that extra
energy coming from?
But the fact is that one block clearly
does have more energy. You think about
them both at the top. One's spinning,
one's not. They basically have identical
gravitational energy, [music] but one
does have additional rotational energy.
How is that possible? And why is it
happening?
No. Explain it to me.
[laughter]
I don't want to give you the answer
right away.
I love it when you say that. I don't
want to give you the answer. That means
you don't know. [laughter]
So, if you can make me a video [music]
response, I would love that. Or if you
just want to post your idea in the
comments below, that would be great. And
I will reveal the correct answer [music]
next week. So, subscribe to the channel
if you haven't already, and you'll find
out in a week's time
after I have time to pour over the
footage and consult a very smart man in
the subject. [laughter] That's what you
get to say.
Yeah.
[music]