Gravitational Force
AP Physics C Mechanics · Flashcards · Application
AP PHYSICS C MECHANICS · FLASHCARDS
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QUESTION
How does gravitational force change if
r
r
r
is halved?
QUESTION
Calculate the gravitational force between two
1
kg
1 \text{ kg}
1
kg
masses
1
m
1 \text{ m}
1
m
apart.
QUESTION
Calculate
F
F
F
if
m
1
=
5
kg
m_1 = 5 \text{ kg}
m
1
=
5
kg
,
m
2
=
10
kg
m_2 = 10 \text{ kg}
m
2
=
10
kg
,
r
=
3
m
r = 3 \text{ m}
r
=
3
m
.
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ANSWER
3.7044
×
10
−
10
N
3.7044 \times 10^{-10} \text{ N}
3.7044
×
1
0
−
10
N
. Using
F
=
G
m
1
m
2
r
2
=
G
(
5
)
(
10
)
9
F = G\frac{m_1 m_2}{r^2} = G\frac{(5)(10)}{9}
F
=
G
r
2
m
1
m
2
=
G
9
(
5
)
(
10
)
.
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