PLEASE HELP ME Your professor purchased a watertight box to

PLEASE HELP ME!!!

Your professor purchased a watertight box to hold his camera while traveling to Ft. Myers Beach, FL during winter break. The box\'s dimensions are shown in the photograph. During the flight, he opened the box and the re-sealed it. Upon reaching his destination, he found that he had significant difficulty trying to open the box. Why was opening the box such a challenge? Estimate the force required to open the box.

Solution

----Pressure inside is lower than the outside that is why external force are greater that make it difficult to open.

---- force equal to typical cabin pressure multiply by normal area (i.e d*w)

Cabin pressure various at altitude of flight.