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 the rotational speed of earth increase, then weight of body at the equator

Show that the weight of a body at the centre of the earth is zero.

What is relation that makes weight of a body at the center of earth zero ?

How mcuh faster than its present rate should the earth rotate about its axis so that the weight of a body at the equator becomes zero? Also calculate the new length of the day. (c ) What would happen if rotation becomes faster ?

If earth were to rotate faster than its present speed, the weight of an object

If earth were to rotate faster than its present speed, the weight of an object

If earth were to rotate faster than its present speed, the weight of an object

If the Earth were a hollow sphere, what would be the weight of a body below its surface?

How many times faster than the present speed should the earth move to rotate about it’s axis, so that the apparent weight of the bodies on the equator becomes Zero.