What is the work done in taking an object of mass 1kg from the surface of the earth to a height equal to the radius of the earth? (G = 6.67 xx 10^(-11) Nm^2//kg^2, Radius of the earth =6400km, Mass of the earth = 6 xx 10^24kg.)

What is the work done in taking an object of mass 1kg from the surface

1.	What is the work done in taking an object of mass 1kg from the surface of the earth to a height equal to the radius of the earth? (G = 6.67 xx 10^(-11) Nm^2//kg^2, Radius of the earth =6400km, Mass of the earth = 6 xx 10^24kg.)
Answer» Solution :The work done in TAKING an object to a HEIGHT `=(GMM)/(R(R+h))`, Here h=R `=(6.67xx10^(-11)xx6xx10^24xx1)/(2xx6.4xx10^6)=3.127xx10^7` J