Question

What is the force of gravity between two 3.0 kg masses 1.0 m apart?

Answer 1

m₁ = mass of the first object = 3.0 kg

m₂ = mass of the second object = 3.0 kg

r = distance between the first and second object = 1.0 m

G = universal gravitational constant = 6.67 x 10⁻¹¹ N m²/kg²

F = force of gravity between the two objects = ?

according to law of gravitation, force of attraction "F" between two objects m₁ and m₂, placed distance "r" apart is given as

F = G m₁ m₂/r²

inserting the values

F = (6.67 x 10⁻¹¹) (3.0) (3.0)/(1.0)²

F = (6.67 x 10⁻¹¹) (9.0)

F = 60.03 x 10⁻¹¹ N

F = 6.003 x 10⁻¹⁰ N