Imagine you have a square meter of toliet paper. The oter edges are supported by a wooden frame and then the entire apparatus is placed in a vacuum (a region devoid of air). Next, sand is slowly added in the center. After adding 0.500 kg of sand to the toliet paper, it rips. Then the experimenter states that he has just disproved that atmospheric pressure could be 10,130 N/m (squared). This pressure indicates that the air alone will apply a force 10,130N to a square meter of any material. The experiment indicates that toliet paper can only withstand a pressre of 0.500 N/m(squared). Is the method correct and is his conclusion accurate?
2006-11-30 08:53:46 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
No, air pressure is applied in all directions. Down, as well as up. The downward air pressure is negated by the equal upwards pressure.
2006-11-30 08:56:28 · answer #1 · answered by robx0r 1 · 1⤊ 1⤋
This assumes that the air pressure only comes from the top. In real air pressure, the air presses from both the top and the bottom, causing nearly no force. (there is a actually a slight difference in pressure at the bottom and top of the toilet paper). If your were to evacuate only the bottom of the paper, the paper would most certainly rip.
2006-11-30 16:58:02 · answer #2 · answered by Nicknamr 3 · 1⤊ 0⤋
No and No.
2006-11-30 17:05:04 · answer #3 · answered by hunterentertainment 3 · 0⤊ 0⤋