View previous topic :: View next topic |
Author |
Message |
capstinence
Joined: 12 May 2005 Posts: 44 Location: Los Angeles, CA
|
Posted: Mon May 16, 2005 2:18 am Post subject: Another Water-Based Puzzle |
|
|
There is a rope ladder hanging over the side of a ship. Each of the rungs of the ladder are a meter apart. The tide rises at the rate of 80 centimeters an hour. How many rungs are covered after four hours?
Last edited by capstinence on Mon May 16, 2005 2:34 pm; edited 1 time in total |
|
Back to top |
|
|
Guest
|
Posted: Mon May 16, 2005 12:11 pm Post subject: |
|
|
I need more details, as many as you can give. starting position of the latter is going to matter. Also want to verify that metre = meter = 100 centimeters so that i can exclude any tricks. |
|
Back to top |
|
|
capstinence
Joined: 12 May 2005 Posts: 44 Location: Los Angeles, CA
|
Posted: Mon May 16, 2005 2:34 pm Post subject: |
|
|
You do not need any more details, but sure - a meter is 100 centimeters (I fixed the spellings). |
|
Back to top |
|
|
OSUsammy13
Joined: 14 May 2005 Posts: 9
|
Posted: Mon May 16, 2005 10:17 pm Post subject: |
|
|
I have looked at this several times and I finally got the right answer (not posted b.c I don’t want to ruin the suspense). This is clever but very strait forward.
Next time someone asks for more details, even if they aren't relevant to finding the answer, it would be a good technique just to make up the details. Word problems are great when you have to decipher the relevant data.
Also - Forum postings should have spell check, engineers - specifically me - are not able to spell. |
|
Back to top |
|
|
Konquest
Joined: 08 Jun 2005 Posts: 3
|
Posted: Wed Jun 08, 2005 5:18 pm Post subject: |
|
|
The answer is pretty straightforward... I'll white it just below, so there is minimal spoilers...
The boat rises with the tide, so the rope ladder is not covered by the tide coming up... |
|
Back to top |
|
|
Michael Chu
Joined: 10 May 2005 Posts: 1654 Location: Austin, TX (USA)
|
Posted: Sat Feb 28, 2009 9:22 am Post subject: |
|
|
But how many rungs were covered to begin with? Without that info, the question is unanswerable. |
|
Back to top |
|
|
GaryProtein
Joined: 26 Oct 2005 Posts: 535
|
Posted: Tue Mar 03, 2009 2:53 am Post subject: |
|
|
Michael Chu wrote: | But how many rungs were covered to begin with? Without that info, the question is unanswerable. |
The question could be re-worded, "How many MORE rungs would be covered after four hours." That way, the initial number of rungs does not affect the final answer. |
|
Back to top |
|
|
Michael Chu
Joined: 10 May 2005 Posts: 1654 Location: Austin, TX (USA)
|
Posted: Tue Mar 03, 2009 6:06 am Post subject: |
|
|
GaryProtein wrote: | The question could be re-worded, "How many MORE rungs would be covered after four hours." That way, the initial number of rungs does not affect the final answer. |
Ah, yes. Then the answer would be straightforward. |
|
Back to top |
|
|
Riprap
Joined: 23 Nov 2009 Posts: 1
|
Posted: Mon Nov 23, 2009 2:57 pm Post subject: |
|
|
Since the ship is afloat the level of the water on the ladder would not change. |
|
Back to top |
|
|
Guest
|
Posted: Sun Dec 13, 2009 4:29 pm Post subject: |
|
|
Riprap wrote: | Since the ship is afloat the level of the water on the ladder would not change. |
Sure post the puzzle but not a solurtion can someone please post the answer for those of us frustrated?
___________
JerryH Developer |
|
Back to top |
|
|
Auspicious
Joined: 29 Dec 2005 Posts: 66 Location: on the boat, Annapolis, MD
|
Posted: Tue Dec 15, 2009 3:50 pm Post subject: |
|
|
Perhaps I have a warped sense of humour, but I find this a hysterical question. I sailed into Nassau Harbour this morning with three cruise ships in front of me and two behind me. I've had my first shower in three days and laundry is going. I check in here to see if there is anything that might contribute to dinner tonight and find a buoyancy puzzle.
sail fast and eat well, dave
S/V Auspicious
lying Nassau Bahamas |
|
Back to top |
|
|
Auspicious
Joined: 29 Dec 2005 Posts: 66 Location: on the boat, Annapolis, MD
|
Posted: Tue Dec 15, 2009 7:04 pm Post subject: |
|
|
Just re-read the original post -- 1 meter spacing? Golly! How about 20 - 30 cm like every pilot ladder I can see from here? |
|
Back to top |
|
|
Dilbert
Joined: 19 Oct 2007 Posts: 1305 Location: central PA
|
Posted: Tue Dec 15, 2009 9:37 pm Post subject: |
|
|
>> 1 m spacing
indeed, but the spacing - whatever it is - is not relevant. |
|
Back to top |
|
|
Auspicious
Joined: 29 Dec 2005 Posts: 66 Location: on the boat, Annapolis, MD
|
Posted: Wed Dec 16, 2009 6:18 pm Post subject: |
|
|
Dilbert wrote: | >> 1 m spacing
indeed, but the spacing - whatever it is - is not relevant. |
It's relevant if you're trying to climb it! *grin*
sail fast and eat well, dave
S/V Auspicious
lying Nassau Bahama |
|
Back to top |
|
|
Gary Guest
|
Posted: Tue Feb 26, 2013 2:28 am Post subject: |
|
|
Since no one else did, I have to do this. The answer, incredible as it may seem, is zero. No more rungs were covered. So many were hung up on a mathematical problem when, in actuality, absolutely NO math is involved. So rung spacing IS totally irrelevant! When the tide comes in the ship rides up with it. And since the ladder is attached to the ship, it rises also. So many couldn't see the problem for what it really was. It was actually quite ingenious! I loved it. "Auspicious" hit when he said buoyancy! |
|
Back to top |
|
|
|