这架飞机做圆周运动运动的周期为T=20*4=80S
a=V*ω
=V*2π/T
=200*2*3.14/80
=400*3.14/80
=5*3.14
=15.7m/s^2

请及时采纳.有问题请向中学生数理化团队求助.