A reference frame attached to the earth:

Question

A reference frame attached to the earth: (A) is an inertial frame by definition (B) cannot be an inertial frame because earth is revolving round the sun (C) is an inertial frame because Newton's law are applicable (D) is an inertial frame because the earth is rotating about its own axis

Tardigrade Admin · Accepted Answer

The frame of reference which are at rest or in uniform motion are called inertial frames while frames which are accelerated with respect to each other are non-inertial frames. Spinning or rotating frames are accelerated frames, hence these are non-inertial frames.

Q. A reference frame attached to the earth:

is an inertial frame by definition

cannot be an inertial frame because earth is revolving round the sun

is an inertial frame because Newton's law are applicable

is an inertial frame because the earth is rotating about its own axis

The frame of reference which are at rest or in uniform motion are called inertial frames while frames which are accelerated with respect to each other are non-inertial frames. Spinning or rotating frames are accelerated frames, hence these are non-inertial frames.