1) This diagram shows the
path of a planet orbiting a central mass:
The two areas are swept out
in equal intervals of time. How does area 1 compare to area 2?
a) area 1 = area 2
b) area 1 < area 2
c) area 1 > area 2
d) insufficient information given to compare the areas
2) A 1500 kg spaceship
circles a planet once every 4.0 X 105 s with an orbital radius of 3.6 X 107
m. What is the mass of this planet?
3) An
object is located on the surface of a planet. The work required to remove this object
from the planet's gravitational field depends on which combination of the following three
variables:
|
mass of the planet |
mass of the object |
radius of the planet |
| a) |
|
yes |
yes |
| b) |
yes |
yes |
no |
| c) |
yes |
no |
yes |
| d) |
no |
yes |
yes |
 |
4) A
satellite is placed in orbit around the sun. The orbital radius of the satellite is
twice the orbital radius of the earth. What is the orbital period of this satellite?
5) Find the
gravitational force of attraction between a 75 kg mass and a 1500 kg mass when their centers
are 10 m apart.
6) A
circular space station of radius of 120 m is to be rotated so that its astronauts experience
an effect similar to that of a gravitational field. If the field is to be 5.0 m/s2
at this radius, what should be the period of rotation of the space station?
|
