Register to reply

Is the earth in a non-inertial reference frame?

by deadscientist
Tags: earth, frame, noninertial, reference
Share this thread:
Apr1-13, 10:14 PM
P: 29
So I would agree that it has a uniform tangential velocity but would the centripetal acceleration of the earth put it in a non inertial frame.
Phys.Org News Partner Physics news on
Refocusing research into high-temperature superconductors
Neutron tomography technique reveals phase fractions of crystalline materials in 3-dimensions
Tiny magnets, huge fields: Nanoscale ferromagnetic electrodes create chemical equivalent of solid-state spin valve
Apr1-13, 11:44 PM
P: 3,928
The rest frame of the earth is noninertial due to rotaion around its own axis. As for the centripetal accelleration due to suns gravity, it depends which theory of gravity you use:

In Newtons model gravity is a real force that causes proper acceleration, which makes orbiting bodies noninertial (even nonrotationg ones).

In general relativity free falling objects are inertial, but inertial frames exist only locally, at the center of the planet. The surface is very noninertial.

Register to reply

Related Discussions
How inertial frame of reference differs from non-inertial frame..? Special & General Relativity 14
Inertial and non-inertial frame of reference Introductory Physics Homework 3
Major difference of Inertial and non-inertial frame of reference ? Special & General Relativity 3
Earth is a inertial frame of reference General Physics 4
Is a reference frame fixed to a photon an Inertial Frame? Special & General Relativity 3