Next: Rotating Reference Frames
Up: Rotating Reference Frames
Previous: Rotating Reference Frames
As we saw in Chapter 2, Newton's second law of motion is
only valid in inertial frames of reference. Unfortunately, we are sometimes
forced to observe motion in non-inertial reference frames. For instance,
it is most convenient for us to observe the motions of the objects in our
in a reference frame which is fixed relative to the surface of the Earth.
Such a frame is non-inertial in nature, since it
accelerates with respect to a standard inertial frame due to the Earth's daily rotation about
its axis. (Note that the accelerations of this frame due to the Earth's orbital motion about the Sun, or
the Sun's orbital motion about the galactic center, etc., are
negligible compared to the acceleration due to the Earth's axial rotation.) Let us now investigate
motion in a rotating reference frame.