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Universal Gravitation
Universal Gravitation
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Newton's Law of Universal Gravitation
Flashcards
15 cards
F
Practice quiz
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Host live
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Questions
15
Answers
1
2 students attract each other with a gravitational force, however it's impossible to calculate
False
True
2
The greater Earth's radius is, the _______ that another object will be attracted to it.
less
more
3
What's the F
grav
on a student on planet X : m
1
= 60 kg; m
2
= 11.96 x10
24
kg; d = 6.37 x10
6
m
3 N
996 N
1180 N
661 N
4
What's the F
grav
on a student on planet Z : m
1
= 60 kg; m
2
= 5.98 x10
24
kg; d = 3.18 x10
6
m
2367 N
2298 N
4598 N
6327 N
5
The idea that any 2 objects gravitationally attract each other is a theory with no evidence
false
true
6
The more massive an object is, the _______ that the object will be attracted to Earth
less
more
7
In the equation
F
grav
= G * m
1
* m
2
/ d
2
the symbol
G
represents...
the gravitational constant
gravity
the acceleration of gravity
8
The value of G is a huge number; that's why the attraction between the Sun and Earth is so big
True
False
9
What's so
universal
about Newton's law of gravitation?
the accelerat. caused by gravity is the same for all objects
all objects with color attract
the amount of grav. force is the same for all objects
the force of gravity acts between all objects, even 2 people
10
The force of gravity between a planet and an object on its surface depends upon...
the mass of the object
the radius of the planet
the mass of the planet
the volume of the object
11
Astronauts in the space shuttle seem to float around because...
there's no weight in space
there is no gravity in space
there is no air resistance
the astronauts are in continuous free fall
12
Calculate the F
grav
between Earth and a student m
1
= 60 kg; m
2
= 5.98 x10
24
kg; d = 6.37 x10
6
m
691 N
875 N
257 N
590 N
13
The more massive the Earth is, the _____ that another object will be attracted to it.
less
more
14
Calculate the F
grav
between 2 students in class where m
1
= 60 kg; m
2
= 60 kg; d = 1 m
2.4 x 10-9 N
2.4 x 10-5 N
2.4 x 10-7 N
0 N
15
Newton proposed the law of universal gravitation because he had been studying...
the motion of the moon and other space objects
the gravitational interaction between small objects on Earth
actually Newton had no evidence and just made a lucky theory
the fall of an apple to the Earth
