Anchor Riddle

[shorebird]

I just re-read the question...ooops should have read it more closely... my answer is based on the water level AT THE WATERLINE of the boat, not the tank. My bad.

[Cheechako]

Think of it this way. If the anchor is a 6" diameter ball of lead or a 6" diameter ball of aluminum..... it will displace the same water when it's in the water, but the boat will displace less water with the aluminum ball aboard than the lead ball.....

[bstreep]

Originally Posted by Cheechako

Think of it this way. If the anchor is a 6" diameter ball of lead or a 6" diameter ball of aluminum..... it will displace the same water when it's in the water, but the boat will displace less water with the aluminum ball aboard than the lead ball.....

Good analogy.

[cwyckham]

Originally Posted by bstreep

BTW, for the OP, "you suck!" This is keeping me from working!

Wow. Bill nailed it 8 minutes after my post went up! Yep, water level goes down for all the reasons already explained very nicely by the CF brain trust. You guys are amazing. I was hoping for six pages of arguments. I'll have to come up with a better one!

[aquarian]

Originally Posted by Therapy

But the question doesn't ask about the boat.

It asks about the level of water in the tank. but I guess if the boat rises the water has to go down in the tank.

To the bathtub where most of my sailing (and anchoring) skills have originated.

OMG!! You make me giggle. This thread is too funny!

[Lagoon4us]

Originally Posted by bstreep

Not quite - this is a displacement problem. The anchor in the boat displaces more water than it does in the water (on the bottom). On the boat, it displaces an amount of water equal to its weight. On the bottom, it only displaces as much water is its volume.

That is the correct answer....Cheers

[Ex-Calif]

Originally Posted by cwyckham

. I was hoping for six pages of arguments.

All your gotta do is ask whether the aluminum ball or steel ball holds the boat better...

[Lancerbye]

Now if this was a Ronca anchor made in china versus one made in Canada.......

[shorebird]

A manufacturer of nautical rope states his 6 mm rope has a breaking strength of 3800 lbs.
In order to test this, a group of people have a tug-of-war. There are two teams with 20 people on each team. Each person can pull 100 lbs. Can they break the rope?

[Vyndance]

No. There is only 2000 # of resistance.

[shorebird]

Correct. Most people don't get that one, and it can seem counter-intuitive. Each team is actually pulling 2000 lbs on the rope, in opposite directions, but there is no cumulative pressure. To put it another way, imagine a 500 lb weight being lifted up from the ground with a rope. how many pounds to raise the weight? well, 500 of course. How many pounds is the weight pulling in the opposite direction on the rope? again 500. 500 up, 500 down, but clearly a 500 lbs weight can't put 1000 lbs on the rope, just 500.

[Adelie]

Originally Posted by shorebird

A manufacturer of nautical rope states his 6 mm rope has a breaking strength of 3800 lbs.
In order to test this, a group of people have a tug-of-war. There are two teams with 20 people on each team. Each person can pull 100 lbs. Can they break the rope?

Does any of them have a knife?

[GeoPowers]

Just goes to show you should never believe any of my posts!

[bene505]

You sail due north for 5nm, then due east for 5nm, then due south for 5nm. You end up 4.9nm from where you started. What is your starting latitude? Feel free to assume a perfectly spherical earth.

Regards,
Brad

[Geoduck]

what happens when you use 3/4" nylon rope instead of 1/2"BBB chain?
remember - the rope soaks up water!