Plane Altitude from Gravitational Acceleration · CAP 2016 #Q24
Physics · mechanics
Problem
While on a long plane ride over the equator (where the Earth's radius is 6 378 km), the captain announces that the local gravitational acceleration is 9.75 m/s². At approximately what altitude is the plane flying?
a) 5 500 m
b) 11 000 m
c) 16 000 m
d) 1 100 m
e) 22 000 m