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?
|
