Question

Two spherical objects have masses of 100 kg and 200 kg. Their centers are

separated by a distance of 40 cm. Find the gravitational attraction between
them.

Answer 1

8.34 x 10⁻⁶N

Step-by-step explanation:

Given parameters:

Mass 1 = 100kg

Mass 2 = 200kg

Distance of separation = 40cm = 0.4m

Unknown:

Gravitational force of attraction between them = ?

Solution:

To solve this problem, we use the expression below which is derived from the Newton's law of universal gravitation:

Fg =
`(G x mass 1 x mass 2)/(d^(2) )`

G is the universal gravitation constant = 6.67 x 10⁻¹¹

d is the separation

Now;

Fg =
`(6.67 x 10^(-11) x 100 x 200)/(0.4^(2) )` = 8.34 x 10⁻⁶N