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Another "simple" physics question for ATOT

Fenixgoon

Fenixgoon

Lifer
A ship out at sea decides to drop its anchor in the water. Does the water level rise, lower, or stay the same?

I can't wait for the responses to this 🙂
 
Sea level is based on gravitational pull of the moon? Plus, the anchor is on the boat, the displacement is already added when the boat is in the water.
 
Stays the same.
The anchor could be in the boat pushing the boat down or out displacing the water. Same force.
On a second thought, the water may rise because water is relativity dense.
The answer is insignificant unless you are dangleing from the boat, in range of the falling anchor.
 
Originally posted by: 2Xtreme21
Rises. You're displacing the water (albeit to an immeasurable degree) by adding something to it.
Click to expand...

But when the anchor hits the bottom you lose some mass on the boat and the boat rises, thereby decreases displacement by the boat.



I'm too lazy to do the math.
 
Water drops

In the boat, the anchor is displacing its weight in water.
In the water, the anchor is displacing its volume in water.

But since the anchor is denser than water, its weight in vol of water is greater than its volume in water. Thus when u toss that mofo into teh water, the water drops
 
Originally posted by: videogames101
Originally posted by: 2Xtreme21
Rises. You're displacing the water (albeit to an immeasurable degree) by adding something to it.
Click to expand...

But when the anchor hits the bottom you lose some mass on the boat and the boat rises, thereby decreases displacement by the boat.



I'm too lazy to do the math.
Click to expand...

That is an assumption. You know what happens when we make assumptions, Tom.

 
Originally posted by: Mo0o
Water drops

In the boat, the anchor is displacing its weight in water.
In the water, the anchor is displacing its volume in water.

But since the anchor is denser than water, its weight in vol of water is greater than its volume in water. Thus when u toss that mofo into teh water, the water drops
Click to expand...

Exactly. (This is from an old riddle about a boat in a canal with a cargo of iron and cork.)

 
Originally posted by: nineball9
Originally posted by: Mo0o
Water drops

In the boat, the anchor is displacing its weight in water.
In the water, the anchor is displacing its volume in water.

But since the anchor is denser than water, its weight in vol of water is greater than its volume in water. Thus when u toss that mofo into teh water, the water drops
Click to expand...

Exactly. (This is from an old riddle about a boat in a canal with a cargo of iron and cork.)
Click to expand...
What about the anchor chain? It displaces its volume in the water and also imparts a weight to the ship.

I would think the water rises, but the amount is so infinitesimal that it really makes no difference.
 
Originally posted by: Fenixgoon
A ship out at sea decides to drop its anchor in the water. Does the water level rise, lower, or stay the same?

I can't wait for the responses to this 🙂
Click to expand...

It lowers, because of global warming.
 
Originally posted by: Mo0o
In the boat, the anchor is displacing its weight in water.
In the water, the anchor is displacing its volume in water.
Click to expand...

This. However the answer will change if the anchor doesn't hit bottom. If the anchor doesn't hit bottom then the total amount of volume of water displaced is the same weather the anchor is in the boat or not.
 
stays the same.

mass of (boat + anchor) = mass of boat + mass of anchor.

edit: i think i'm wrong... i think mooo is right.
 
Originally posted by: Mo0o
Water drops

In the boat, the anchor is displacing its weight in water.
In the water, the anchor is displacing its volume in water.

But since the anchor is denser than water, its weight in vol of water is greater than its volume in water. Thus when u toss that mofo into teh water, the water drops
Click to expand...

this.

my answer's wrong... i was on the right track though.
 
i'll have to ask one of my patients.... he maps gravitational pulls on various points of the earth's ocean floor and surface. he's a geospacial engineer. he's all about this kind of shit. i won't see him until next month, though.
 
Originally posted by: Mo0o
Water drops

In the boat, the anchor is displacing its weight in water.
In the water, the anchor is displacing its volume in water.

But since the anchor is denser than water, its weight in vol of water is greater than its volume in water. Thus when u toss that mofo into teh water, the water drops
Click to expand...

This.
 
Depends on weight of the anchor. If the anchor weighs a lot, once overboard, the water level falls. If the anchor is very light, water level rises.
 
Originally posted by: TecHNooB
Depends on weight of the anchor. If the anchor weighs a lot, once overboard, the water level falls. If the anchor is very light, water level rises.
Click to expand...

Has nothing to do with the weight.
 
Originally posted by: TallBill
Originally posted by: TecHNooB
Depends on weight of the anchor. If the anchor weighs a lot, once overboard, the water level falls. If the anchor is very light, water level rises.
Click to expand...

Has nothing to do with the weight.
Click to expand...

Replace some words with density then 😛
 
Originally posted by: Fenixgoon
A ship out at sea decides to drop its anchor in the water. Does the water level rise, lower, or stay the same?

I can't wait for the responses to this 🙂
Click to expand...

stays the same...
 
Originally posted by: TecHNooB
Depends on weight of the anchor. If the anchor weighs a lot, once overboard, the water level falls. If the anchor is very light, water level rises.
Click to expand...

chances are the anchor is denser than water 😉

anyway concur with m00. of course reality is a bit complicated. part ofthewegiht is still gonna drag on the ship but the loss of displacement from the weight difference should still trump the gain in displalcement from the anchor. steel (?) is a lot denser than water.

but really though it makes no difference 😉
 
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