To work out the force of attraction between an apple with a mass of 100 g (0.1 kg), and the Earth is as follows: Note that the mass of the Earth is 6 × 1024 kg and the distance to the centre of the Earth is 6400 km (6400000 m).
(after converting 6400000 and 0.1 to standard index form)
(after re-arranging)
= 0.97 newtons
|
