Question

If two 1000kg cars have a gravitational force of 1.067x10^-5 N towards each other, how far apart are they?

Answer 1

6.25m

Step-by-step explanation:

Given parameters:

Masses of the car = 1000kg

Gravitational force = 1.067 x 10⁻⁵N

Unknown:

Distance between them = ?

Solution:

To solve this problem, we use the expression below from the universal gravitational law;

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

G = 6.67 x 10⁻¹¹

1.067 x 10⁻⁵ =
`(6.67 x 10^(-11) x 1000 x 1000 )/(d^(2) )`

d = 6.25m