A man weighs 440N on the earths surface what will be his weight one earths radius above.

Question

A man weighs 440N on the earths surface what will be his weight one earths radius above.

 

Answer 1

F = weight

m = mass of body

M = mass of earth

R = radius of earth

G = universal constant of gravitation

 

On the surface of the earth:

 

F₁ = GMm/R²

 

One earth radius above the surface of the earth:

 

F₂ = GMm/(2R)² = F₁/4

 

He will weigh

 

(440 N)/4 = 110 N.