The radius of the Earth is 6400 km and g = 10 in order that a body of 5 kg weights zero at the equator, the angular speed of the Earth is ............ rad

The radius of the Earth is 6400 km and g = 10 in order that a body of

1.	The radius of the Earth is 6400 km and g = 10 in order that a body of 5 kg weights zero at the equator, the angular speed of the Earth is ............ rad
Answer» `1/80` `1/400` `1/800` `1/600` SOLUTION :For condition of WEIGHTLESSNESS at EQUATOR `omega = SQRT(g/R) = 1/800 ` rad/sec