Question

A reference frame attached to the earth
a) is an inertial frame by definition
b) can not be an inertial frame because the earth is revolving around the sun
c) is an inertial frame because Newton's laws are applicable in this frame
d) cannot be an inertial frame because the earth is rotating about its axis

• A. a, b, c are correct
• B. b only correct
• C. b and d are correct
• D. All are correct

Answer 1

The correct option is C b and d are correct

Earth rotates around its axis, as also revolves around the sun. Therefore, Earth or any other frame attached to earth cannot be considered as Inertial frames. As these frames are under acceleration Newton's laws can be applied only with approximations.