Question

what is the displacement of a fixed point of the earth when the earth complete one rotation about its axis

Answer 1

There is zero displacement.

Explanation:

The displacement is a vector quantity.  The displacement of a point on Earth when one rotation of Earth is completed about its axis would mean that the particular point on the Earth surface started its journey by rotation about the Earth’s axis.

Through the rotation, the displacement is the circumference of the Earth traveled about the axis. But as soon as the point reaches its original position on completion of the rotation, displacement becomes zero due to the vector product formulation.

Answer 2

Answer:

The displacement will be zero.