一架飞机20000kg有翅膀面积60平方米 上升和下降的大气压差是多少
问题描述：
一架飞机20000kg有翅膀面积60平方米 上升和下降的大气压差是多少
An airplane in level flight whose mass is 20000kg has a wing area of 60m2.what is the pressure difference between the upper and lower surface of its wing?Express your answer in atmospheres.
答
大气压强差
厶P=mg/s=2*10^4*10/60=3.333*10^3pa