On earth two parts of a space probe weigh 15000 N and 4600 N

On earth, two parts of a space probe weigh 15000 N and 4600 N. These parts are separated by a centre to centre distance of 9.0 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other object if you\'re putting an object up . with a rope , at a constant velocity that was a mass of 217 kg, what it the upward force of tension in the rope? Do not put units in your answer .

Solution

4) gravitational force between two objects is Gm1m2/r^2 .

m1=15000 kg

m2=4600 kg.

G=6.674 * 10^-11 Nm^2/kg^2

r=9 m

so F=6.674 * 10^-11 * 15000*4600/(9*9) = 5.7 *10^-5 N

b) if upward pulling is at constant velocity then tension= mg = 217 *9.8 *10^3 =2.126 * 10^6 N