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

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?

If the speed of rotation of earth about its axis increases, then the weight of the body at the equator will

Suppose the earth increases it speed of rotation. At what new time period will the weight of a body on the equator becomes zero ? (Take, g = 10 ms^(-2) and radius of earth R = 6400 km)

Suppose the earth increases its speed of rotation . At what new time period will the weightof a body on the equator becomes zero? Take g=10 m/s^2 and radius of the earth R=6400 km .

At which angular speed the earth should rotates so that the apparent weight of an object at equator will become zero ?

Assertion : If the earth stops rotating about its axis, the value of the weight of the body at equator will decrease. Reason : The centripetal force does not act on the body at the equator.