A boat is in a lock. The lock is 500 ft long 200 ft wide and 100 ft deep. It is already flooded with 5 feet of water. There is a ladder hanging from the side of the boat down only 2 feet. ItThere is 2 rings at the bottom of the ladder. The rings are 7 ft from the water. They begin to flood the lock with water at 100 gallons per minute. How long before the water reaches the the rings at the bottom of the ladder?
2006-11-21 01:22:09 · 9 answers · asked by paula C 1 in Science & Mathematics ➔ Mathematics
The boat rises as the water rises. It will never reach the rings. bob h spelled "near" wrong.
Spud55 Didn't answer.
Tim assumed the boat was already afloat therefor the water might come closer that 7 ft to the ladder.
Wil t said "bob k" instead of "bob h"
iron duke insulted you
I should get the 10 points ( not to mention that I am your husband)
2006-11-21 02:03:18 · answer #1 · answered by Anonymous · 0⤊ 0⤋
the lock is 100ft. deep
n the lock is already flooded with 5 ft of water.
therefore, the lock becomes (100 - 5 ) = 95 ft. deep
then 2ft. long ladder n 7 ft. long rings (2 + 7) = 9ft. from the boat.
the lock is flooded with water @ 100/min = speed.
taking the speed to a standard form, 100/60*60 = 0.027 sec.
the final distance between the water n the ladder is( 95 - 9) = 86ft
to calculate the time it takes the water to reach the bottom of the ring, we go by the formular
speed = distance/time.
speed = 0.027sec. ,diastance =86ft. , time =?
time =distance/speed.
time = 86/0.027
= 3185.2 sec
2006-11-21 02:50:16 · answer #2 · answered by thonjela 1 · 0⤊ 0⤋
If the there is a roof above the boat, and the walls don't leak, then when the boat hits the roof, then the water will reach the ladder and the two rings, but since there's no specs. about how high the lock is....I guess this won't happen either....
2006-11-21 02:01:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The water will never reach the rings, because the boat will float upwards as the water level rises. The rings will always remain 7 feet above the surface of the water!
Hope this helps.
2006-11-21 01:29:13 · answer #4 · answered by Tim GNO 3 · 1⤊ 0⤋
You know, someone else asked the same kind of question to which my answer got selected as best. The words 'ladder' and 'boat' are a dead giveaway.
By the way, boats float on water at all times, especially the wooden ones.
I really wonder when someone'll browse around to see if it's worth wasting 5 points over a similar type of question.
2006-11-21 01:43:52 · answer #5 · answered by Akilesh - Internet Undertaker 7 · 0⤊ 1⤋
The boat will float the water will never reach the ladder.
Bob K said 'neer' so he's disqualified
2006-11-21 01:31:13 · answer #6 · answered by Wil T 3 · 1⤊ 0⤋
This is such an old problem that I immediately knew the answer after reading the words "There is a ladder.."
Try to come up with something new.
2006-11-21 01:35:14 · answer #7 · answered by ironduke8159 7 · 1⤊ 0⤋
The boat floats.
The water will neer reach!
2006-11-21 01:24:52 · answer #8 · answered by bob h 3 · 0⤊ 1⤋
I'd answer this if you you gave me something that had worth. 10 points? Pshaw!! Who cares?
2006-11-21 01:25:13 · answer #9 · answered by Spud55 5 · 0⤊ 3⤋