Data : Radius of the Earth = r = 6400 km
= 6.4 × 106 m, g = 9.8 m/s2
As the Earth rotates, the bodies on the equator revolve in circles of radius r.
These bodies would not feel any weight if their centripetal acceleration (ωr) is equal to the acceleration due to gravity (g).
∴ ω2r = g
The angular speed of the Earth’s rotation,