Question

A 1kg object at the surface of the earth weighs 9.8N. (F=ma) Prove this by using the formula Fg = Gmm/r2. (Find the radius and the mass of the earth on the internet.)

Answer 1

Answer:

$form radius$

g=Gm/r2

9.8=

Explanation:

$9.8 = (6.67 \times 10 ^{ - 2} \times 1kg) \div r \ r = 6.806 \times 10 ^{ - 12} \\ r = 2.6 \times 10 ^{ - 6}$