A RESEARCH SATELLITE OF MASS 200 KG CIRCLES IN AN ORBIT of averge radius of 3R/2 WHERE R is the radius of the earth. Aasuuming that the gravitational pull on the mass of 1 kg on the earth's surface is 10N, the pull on the satelite is --------------

accleration due to gravity at surface(g_s)= GM/R²

accleration due to gravity at a height (g_h) = GM/(R+H)²

force on a particle of 1kg at surface  = mGM/R² =GM/R² = 10N     ......1           (given)

force on satellite of mass 200kg at a height H  = mGM/(R+H)² 

                    F = 200GM/(R+H)²  .............2

dividing 2 by 1

 F/10 = 200/(1+H/R)²

        =2000(4/25)                      (H=3R/2)

        =320N

Approved