10.2) When flying, the pressure inside the cabin of an aircraft is kept at 70 kPa.
The aircraft window has an area of 810 cm2.
Use data from Figure 17 to calculate the resultant force acting on an aircraft window
when the aircraft is flying at an altitude of 12 km.
Give your answer to two significant figures
Resultant force = ___________________ N
10.3) Figure 18 shows the cross-section of one type of aircraft window.
Explain why the window has been designed to have this shape.