Question

Two identical cars are parked 4.7 m apart on a car dealer’s show-room f loor. The force of gravity between the cars is 4.5*10^-6 N.
What is the mass of each car?

Answer 1

as usual,
F = Gmm/d^2
(6.67*10^-11) m^2 /4.7^2 = 4.5*10^-6
m = 1229.79 kg

Answer 2

Therefore, the mass of each car is approximately 1229.79 kg.