Assertion: physicist's work | /r/HasProperty | done by gravity
Facets:
value: with a circular orbit
type: OTHER
value: on a planet
type: LOCATION
Source sentences:
text: y. Notice that the work done by gravity depends only on the vertical movement of the object.
text: Thus, no work can be performed by gravity on a planet with a circular orbit (this is ideal, as all orbits are slightly elliptical).