What is the acceleration due to gravity at 200 feet above sea level?

Answer 1

We need some numbers to start out with. Let's assume that the Earth's radius,

from the center to sea level, is 4,000 miles, and that the acceleration of gravity

is 9.80000 m/s2 at sea level.

We'll also need . . . 200 feet = 200/5,280 = 0.03788 mile

The acceleration due to gravity is inversely proportional to the distance from the

center of the Earth. So, at a radius that's 200 feet larger, it's

[ 4,000/(4,000.03788) ]2 = 99.99811 percent of its value at sea level

= 9.79981 m/s2 .

If you weigh 200 pounds at sea level, then at 200 feet altitude you would

weigh 199pounds 15.9394ounces . . . a full 0.0606 ounce less.

Answer 2

The acceleration due to gravity at 200 feet above sea level is approximately 32.15 ft/s^2, which is slightly lower than the standard value of 32.2 ft/s^2 at sea level. This slight decrease is due to the increase in altitude and the corresponding decrease in the gravitational force as you move farther away from the Earth's center.