Compare Gravitational and Electric Forces
Physics · Flashcards · Recall
PHYSICS · FLASHCARDS
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QUESTION
What is the quantitative ratio
F
e
F
g
\frac{F_e}{F_g}
F
g
F
e
for two particles separated by the same
r
r
r
?
QUESTION
What is the direction rule for the electric force on
q
1
q_1
q
1
due to
q
2
q_2
q
2
?
QUESTION
What is the formula for the magnitude of the gravitational force between two point masses?
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ANSWER
F
g
=
G
m
1
m
2
r
2
F_g=G\frac{m_1m_2}{r^2}
F
g
=
G
r
2
m
1
m
2
. Newton's law of universal gravitation with inverse square dependence on distance.
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