For All Gravitational Force Fields
|
Units |
||
Force |
F=mg
|
N |
|
Gravitational Field Strength |
g=F/m |
N/kg |
|
Work (gravitational potential energy) |
W=EP=mDV see note 1,3 |
J |
|
Gravitational Potential |
DV=EP/m see note 1,3 |
J/kg |
|
Uniform Gravitatioanl Fields |
Point Mass Gravitational Fields |
||
Force |
F=DVm/d see note 1,3 |
F=Gm1m2/r**2 |
N |
Gravitatial Field Strength |
g=V/h see note 1,3 |
g=Gm/r**2 |
N/kg |
Work (gravitatial potential energy) |
DEP=mgDh |
EP= -Gm1m2/r
|
J |
Gravitational Potential |
V=gh see note 1,3 |
V= -G m/r see note 2 |
J/kg |
| Note 1: not in IB Data Booklet |
| Note 2: Not commonly used but is included in the mechanics section of the IB data booklet. I have only seen V used for electrical potentials but apparently this V is for gravitational potential. |
| Note 3: Have never seen this one used, offered for comparison to electric fields only. |