What should be the velocity of earth due to rotation about its own axis so that the weight at equator become 3/5 of initial value. Radius of earth on equator is 6400 km

What should be the velocity of earth due to rotation about its own axis so that the weight at equator becomes 2/5 of initial value? Radius of earth on equator is 6400 km and is 10 m/s^2 .

What should be the angular velocity of earth about its own axis so that the weight of the body at the equator would become 3/4 th of its present value ?

What should be the angular velocity of rotation of Earth about its own axis so that the weight of body at the equator reduces to 3/5 of its present value? (Take R as the radius of the Earth)

What will be the velocity of rotating of earth about its own axis so that a body becomes weightless at the equator ?

What will be the velocity of rotation of earth about its own axis so that a body becomes weightless at the equator?

Find the value of angular velocity of axial rotation of the earth, such that weight of a person at equator becomes 3/4 of its weight at pole, Radius of the earth at equator is 6400 km.

Find the value of angular velocity of axial rotation of the earth, such that weight of a person at equator becomes 3/4 of its weight at pole, Radius of the earth at equator is 6400 km.