# Newton_s Universal Law of Gravitation

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```					Newton’s Universal Law of Gravitation
Complete the following table using Newton’s Universal Law of Gravitation

Mass of Object 1      Mass of Object 2          Separation          Force of gravity
(kg)                    (kg)              distance (m)               (N)
1                    Football Player             Earth               6.37 x 106               ?????
100                5.98 x 1024              surface
2                       Ballerina                Earth               6.37 x 106                 393
?????               5.98 x 1024              surface
3                    Physics Student             Earth            Low height orbit              688
70                 5.98 x 1024               ?????
4                    Physics Student       Physics Student              ?????               3.27 x 10-7
70                      70
5                    Physics Student       Physics Student                0.2                  ?????
70                      70
6                    Physics Student        Physics book                   1                   ?????
70                       1
7                    Physics Student            Moon                  1.71 x 106                117
70                    ?????               (on surface)
8                    Physics Student            Jupiter                 ?????                  1822
70                1.901 x 1027            (on surface)

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9.    Suppose that two objects attract each other with a force of 16 units. If the distance between the
two objects is doubled, what is the new force of attraction between the two objects?

10.   Suppose that two objects attract each other with a force of 16 units. If the distance between the
two objects is reduced in half, then what is the new force of attraction between the two objects?

11.   Suppose that two objects attract each other with a force of 16 units. If the mass of both objects
was doubled, and if the distance between the objects remained the same, then what would be
the new force of attraction between the two objects?
12.   Suppose that two objects attract each other with a force of 16 units. If the mass of both objects
was doubled, and if the distance between the objects was doubled, then what would be the new
force of attraction between the two objects?

13.   Suppose that two objects attract each other with a force of 16 units. If the mass of both objects
was tripled, and if the distance between the objects was doubled, then what would be the new
force of attraction between the two objects?

14.   Suppose that two objects attract each other with a force of 16 units. If the mass of object 1 was
doubled, and if the distance between the objects was tripled, then what would be the new force
of attraction between the two objects?

15.   If our sun shrank in size to a black hole, would the Earth's orbit be affected? Explain.

16.   If you wanted to make a profit in buying gold by weight at one altitude and selling it at another
altitude for the same price per weight, should you buy or sell at the higher altitude location?
What kind of scale must you use for this work?

17.   What would happen to your weight if the mass of the Earth somehow increased by 10%?

18.   The planet Jupiter is more than 300 times as massive as Earth, so it might seem that a body on
the surface of Jupiter would weigh 300 times as much as on Earth. But it so happens a body
would scarcely weigh three times as much on the surface of Jupiter as it would on the surface
of the Earth. Explain why this is so.

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 views: 21 posted: 12/11/2011 language: English pages: 2