Question

Two 20kg spheres are placed with their

Centres 50cm apart. What is the magnitude of
gravitational force each exerts on the other?​

Answer 1

F = 1.07 x 10⁻⁷ N

Step-by-step explanation:

The gravitational force of attraction between two objects can be found by the use of Newton's Gravitational Law:

`F = (Gm_(1)m_(2))/(r^2)\\\\`

where,

F = Gravitational Force of attraction = ?

G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ N.m²/kg²

m₁ = m₂ = mass of spheres = 20 kg

r = distance between the objects = 50 cm = 0.5 m

Therefore,

`F = ((6.67\ x\ 10^(-11)\ N.m^2/kg^2)(20\ kg)(20\ kg))/((0.5\ m)^2)\\\\`

F = 1.07 x 10⁻⁷ N