UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
How it Works
Ask a Question
Search Topics
Our Scientists
Science Links
Contact Information
At what rate does gravity pull objects down to Earth?
Question Date: 2005-01-09
Answer 1:

The gravitational acceleration that we feel on the surface of the Earth is (approximately) governed by the following equation:

a = GM / R2

where: G = the Gravitational constant (which presumably is the same everywhere in the universe) M = mass of the Earth (in kilograms, for example) R = radius of the Earth (in meters, for example.

For the Earth, if you plug in the appropriate numbers, you get acceleration "a" equals 9.8 meters per second squared.

Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2020 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use