The top board on the dam appears to be a 2" x 4" board. How is it possible or that small board to hold back 300 acres of water?
2006-08-22 15:48:37 · 3 answers · asked by saddlesore 3 in Science & Mathematics ➔ Physics
The number of acres of water does not change the pressure on the board. The pressure is solely dependent on the depth of water at the board. For a 4" board - not very deep. Water pressure is about 1/2 psi per foot. So it would be just a few pounds on your board.
2006-08-22 15:51:19 · answer #1 · answered by rscanner 6 · 2⤊ 0⤋
Look at the people in many countries of the world who are starving for the food. How you people waste your time and money on the unproductive and selfinsh things, is difficult to understand. Do you think you will double your age and live for 200 years with the things you are doing. Or do you think you will be permanently happy with this kind of entertainment ? Think ! Try to live for others, and you will get happiness and contentment.
2006-08-22 15:57:42 · answer #2 · answered by unisoul 4 · 0⤊ 0⤋
THe pressure is spread across the board & is so little that the board doesn't crack.
2006-08-22 15:55:15 · answer #3 · answered by mnm75932 3 · 0⤊ 0⤋