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With four, fifty-five gallon plastic drums how many pounds can I hold out of the water?
Would like to build a fishing boat, have plenty of scrap metal and four, fifty-five gallon plastic drums, how much will these drums hold?
The barrels will be the floatation device, they will be sealed and only holding air. I need to know how many pounds of dead weight they will prevent from sinking. Is 1800lbs the answer?
3 Answers
- 1 decade agoFavorite Answer
The buoyant force of the barrels is equal to the amount of the water it displaces.
So 55 gallon drums hold 450 lbs of water. 4 of them hold 1800 pounds of water. That means up to1800 pounds of water will be pushing to get into the barrels, which will in turn, be pushing up on boat.
Keep in mind the boat will only sink as far as it needs to to displace the correct amount of water. If you only have 900 pounds on the boat, then only half of each barrel will be submerged, and the other half of each barels will stick out of the water. Good Luck!
Source(s): Physics! - ?Lv 71 decade ago
Water weighs 8.3454 lbs/gallon
4 (55) gallons = 4 (55) (8.3454) lbs ~ 1836 lbs
Ans: 1836 lbs minus the weight of the tanks themselves.
