The Acceleration Due to Gravity on the Earth's Surface Is

The acceleration due to gravity on the Earth's surface is g.At an elevation of 1,000 km above the Earth's surface is the acceleration due to gravity in terms of g? The radius of the Earth is 6.37 * 10⁶ m.

A) 0.864g
B) 0.747g
C) 0g
D) 0.452g