Answer:
g = GM/R^2
g = 100N means the mass is 10.2 kg...... F = mg
So to find the weight above The distance 6.38x 10^6
we use the formula again
g = G M /R^2
and remember the distance above the surface approximately equals 2R the radius of the earth twice
so the g will decrease 4 times due to the inverse square proportionality giving g = 9.8/4 N = 2.45 N if you do not know how I got this use the formula, weight = mg = 10.2 x 2.45 = 24.99 N
g = GM/R^2 in the place of R put the sum of the distances and square them which will give the g and then use F = mg which will give the weight force which will be around 25 N