Question

please help me to find the solution

Answer 1

When person standing on earth would fly then... Centrifugal force will be equal to gravitational force.
Centrifugal force = Gravitational force
mrw^2 = mg
where w is angular velocity..
rw^2 = g

$w = \sqrt{g \div r}$
Where g = 10 and R = 6.4 × 10^5m
w= 0.00125 rad/s