Gravitational fields Flashcards
1
Q
what is gravitational potential
A
work done per unit mass to move a small object from infinity to that point (V=W/m).
2
Q
what is gravitational potential energy?
A
work done to move a mass from one place to another through a gravitational field (use mgΔh or GMm(1/R1-1/R2).
3
Q
what is gravitational potential gradient?
A
the change of potential per metre at that point (ΔV/ΔR).
4
Q
what is the charge of an ion
A
magnitude of the charge of an electron
5
Q
how do equipotential lines show a field is non uniform?
A
they are curved, change in v/ change in r is not uniform
