Is always attractive and it depends only on the masses involved and the distance between them. F g G m 1 m 2 r 2. Lets start by calculating the gravitational force between the Earth and the Sun using the Universal Law of Gravitaion F G MmR2 667384 10-11 m3 kg-1 s-2 59726 1024 kg 1 988 500 1024 kg 14960 1011 m2 35416173 1022 N.
This unit is part of the Physics library.
It was almost strange how close the readings were and I expected at least a little bit of difference because the duct tape was so heavy and the spool practically weightless. F start subscript g end subscript. So thats simple enough. F g G m 1 m 2 r 2.