# Bowling for Seabed Grime

royalchicken
Posers and Puzzles 30 Aug '03 04:44
1. royalchicken
CHAOS GHOST!!!
30 Aug '03 04:44
I take a standard bowling ball. I get into a rowboat with the bowling ball and row out into a lake. I then toss the ball overboard. What happens to the water level of the lake?
2. 30 Aug '03 04:48
Originally posted by royalchicken
I take a standard bowling ball. I get into a rowboat with the bowling ball and row out into a lake. I then toss the ball overboard. What happens to the water level of the lake?
At which point?
3. royalchicken
CHAOS GHOST!!!
30 Aug '03 04:57
Originally posted by Cheshire Cat
At which point?
Oh. Yeah. After the ball falls into the water.
4. 30 Aug '03 04:59
Originally posted by royalchicken
Oh. Yeah. After the ball falls into the water.
LOL!! I would imagine that the water level stays the same since it would have changed minutely when you got on the boat. Could be wrong though...happens oftern enough. ðŸ˜€
5. royalchicken
CHAOS GHOST!!!
30 Aug '03 05:04
Well, I'm in the boat before and after, so it shouldn't have any effect. Although if you like, I am 116 pounds and about the same density as water ðŸ˜›

Or if you like assume that the ball goes into the boat, which gets shoved into the middle of the lake, then the ball rolls out.
6. 30 Aug '03 05:12
Originally posted by royalchicken
Well, I'm in the boat before and after, so it shouldn't have any effect. Although if you like, I am 116 pounds and about the same density as water ðŸ˜›

Or if you like assume that the ball goes into the boat, which gets shoved into the middle of the lake, then the ball rolls out.
LOL!! It is the same answer. The water level wouldn't change until you got back on land. The bowling ball becomes superfluous. ðŸ˜€
7. royalchicken
CHAOS GHOST!!!
30 Aug '03 05:14
I meant (again...explanation is apparently not my bag ðŸ˜‰) that I'm not in the boat at all.
8. 30 Aug '03 05:24
Originally posted by royalchicken
I meant (again...explanation is apparently not my bag ðŸ˜‰) that I'm not in the boat at all.
Well, if we take you out of the boat all together.....whose going to row it? Just kidding....I would say that: 1) When the ball gets on the boat the water level rises; and, 2)when it falls off the boat (perhaps through third party levitation ðŸ˜€) the water level stays the same. Is this also incorrect?
9. royalchicken
CHAOS GHOST!!!
30 Aug '03 05:36
The first is correct. The ball is displacing its weight. But when it falls in, does the water (third party ðŸ˜€) care how heavy it is, or just how big?
10. 30 Aug '03 05:38
Originally posted by royalchicken
The first is correct. The ball is displacing its weight. But when it falls in, does the water (third party ðŸ˜€) care how heavy it is, or just how big?
It's been quite a while since I was in any kind of science class; but, it seems to me that it has to do with density, not size.
11. royalchicken
CHAOS GHOST!!!
30 Aug '03 05:40
Right. And what is density...?
12. 30 Aug '03 05:49
Originally posted by royalchicken
Right. And what is density...?
LOL!! Oh, my brain...so much stuff to sort through...it seems that density is how much mass is actually there; as opposed to weight, which is a measure of gravitational pull on mass.....
13. royalchicken
CHAOS GHOST!!!
30 Aug '03 05:54
Right. Density is the amount of mass per unit of volume (size). So the mass of the ball displaces water in the boat....but what about out of the boat? Is the ball denser than water?
14. 30 Aug '03 05:56
Originally posted by royalchicken
Right. Density is the amount of mass per unit of volume (size). So the mass of the ball displaces water in the boat....but what about out of the boat? Is the ball denser than water?
Just a thought, but it would seem that, being a solid, the ball by definition would have to be denser than water, which as we know is a liquid.
15. royalchicken
CHAOS GHOST!!!
30 Aug '03 06:001 edit
Bingo. So when we talk about a ball displacing its mass worth of water (in the boat), and its volume worth (in the water), which is the bigger displacement?

That's two posts for me on the hour, 1&amp;2 am EST. Weird ðŸ™‚