The equatorial diameter of the earth is greater than the polar diameter. How would the moment of inertia of the earth change if some mass from near the equator were removed and transferred to the polar regions to make the earth a perfect sphere ?

If the diameter of the earth becomes two times its present value and its mass remains unchanged then how would the weight of an object on the surface of the earth be affected ?

How many hours would make a day if the earth were rotating at such a high speed that the weight of a body on the equator were zero

How many hours would make a day if the earth were rotating at such a high speed that the weight of a body on the equator were zero

If diameter of earth becomes half of its present value and its mass becomes four times its present value, how would the weight of any object on the surface of earth be affected ?

The equatorial diameter of the earth is approximately 8,000 miles. A communications satellite makes a circular orbitals around the earth. If the satellite completes one orbit every 5 hours, how many miles does the satellite travel in 1 hour?

How does the weight of an object vary with respect to mass and radius of the earth. In a hypothetical case, if the diameter of the earth becomes half of its present value and its ,mass becomes four times of its present value, then how would the weight of any object on the surface of the earth be affected?