Question

Find the weight of the body where mass is 10 kg, height is 6400 km, radius is 6400 km

Answer 1

Answer:

Weight of object at height 6400 km = 24.5kg.

Explanation:

We know that as distance between Earth's Surface and Object increases, Gravitational Force decreases.

This decrease in Gravitational Force with increase in height is given by g' = GM/(R+h)^2.

Let initial weight of object is 'W = mg' and final weight of object at height 6400km is W' = mg'

Thus,

g' = (GM)/(R+R)^2 ................ [as h = R = 6400km]

g' = GM/4R^2

g' = g/4

multiply equation by m,

mg' = mg/4

W' = W/4

W' = (10×9.8)/4

W' = 98/4

W' = 24.5kg

Answer 2

Answer:

W' = 24.5kg

is the answer