Question

What is the force of gravitational attraction between an object with a mass of 100 kg and another object that has a mass of 300 kg and are at a distance of 2m apart

Answer 1

5 x 10⁻⁷N

Step-by-step explanation:

Given parameters:

Mass of object 1 = 100kg

Mass of object 2 = 300kg

Distance = 2m

Unknown:

Force of gravitational attraction between the objects = ?

Solution:

From Newton's law of universal gravitation we derive an expression:

Fg =
`(G m_(1) m_(2) )/(r^(2) )`

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

m is the mass

r is the distance between the bodies

Now insert the parameters and solve;

Fg = 6.67 x 10⁻¹¹ x
`(100 x 300)/(2^(2) )` = 5 x 10⁻⁷N