Question

calculate the force of attraction between an object and the earth if the object is placed at height equal to half of the radius from earth's surface. radius of earth 6400km mass of object 2kg g 6.67*10^-11 Nm^2/kg^2 mass of earth 6*10^24 kg

Answer 1

use kepler formula m1 .m2 upon r2 where G- (6.67E-11 m3 s-2 kg-1)