Mathematics and Society - OS X Lion Server

AIRThe vast ocean of air above us exerts pressure similar tothe pressure you feel from water when you are swimming.Scientists have shown that at sea level this air pressure is1,034 grams per square centimetre.1)What is the total force (in grams) due to airexerted or the top of the 2 cm x 2 cm squareto the right?grams, , , ,-----t------, , ,T\.1ERE. \.0\LL BE1,0349 DtERT£DON EACH SQUARECEt-lTIMETRE.2)When a can is open there is as much air pressure on eachsquare cm of surface inside the can as outside. If the canis sealed and the air pumped out, the air pressure inside isgreatly reduced. Calculate how much force due to air pressurewould be on each of these sides.LENGTH WIDTH AREA FORCE DUE TO AIR PRESSUREFRONTSIDETOP3)Your lungs make up a large air cavity in your body.Think up a method to measure the area of your backin square centimetres. Calculate the total force onyour back due to air pressure.____________ area of your back_____________ force due to air pressureHow come air pressure does not- crush you?333