[填空题]
Suppose the space shuttle is in orbit 400 f8kv1n* 78wsc f1to*em(0 b v6vjkn fnkm from thkn6fy qe6vd 8ql :xysi8-9y7xe Earth's surface, and circles the Earth about once every 90 minutes. Find the centripetal acceleration of the space shuttle in its orbit. Express your answer in terms of g , the gravitational accele 8:86qv6 n9d-iyy x eykq7xlfsration at the Earth's surface. $\approx$ g
