Chapter 75 Gravitation Review 2

1
Chapter 7-5 Gravitation Review 2
2

• (a) Calculate g on the surface for the following
  planets Mars, Venus,. (b) What is the weight of
  10 kg on each of Mars and Venus?
• Mars R 3.38 x 106 m, M 6.42 x 1023 kg
• Venus R 6.073 x 106 m M 4.88 x 1024 kg
• Jupiter R 69.8 x 106 m M 1.901 x 1027 kg

3

• 1. Two spheres each of a mass of 40.0 kg are
  place so that their centers are 15.0 m apart. (a)
  Calculate their gravitational force between the
  spheres. (b) What would be the gravitational
  force if they were 30.0m apart
• 2. If the mass of one of the spheres was doubled
  in the above question, how far apart would they
  have to be to have the same force as in (a)?

4

• 1. Calculate the weight of 1 kg on Jupiter using
  the information in the table of information of
  the planets.
• 2. The distance between the Earth and the sun is
  often described as 1 AU (astronomical Unit). In
  terms of this unit what is the distance between
  the sun and Jupiter if the period of orbit of
  Jupiter is 11.8 earth years.

5

• 1. the mean distance between the center of the
  earth and the moon is 3.84 x 108 m. The moon has
  an orbital period of 27.3 days. Find the distance
  from the earth of an artificial satellite that
  has an orbital period of 7 days.
• 2. The gravitational force between two spheres is
  2.05 x 10-7 N. If the spheres are 105 cm apart.
  One sphere has a mass of 15 kg. Find the mass of
  the other sphere.

6

• A body orbits the sun at a distance 15 times that
  of earth.
• a) Find the period of the body in years.
• b) Determine the velocity of the body.
• Mass of Sun 1.991 x 1030 kg
• Distance of Earth from Sun 1.4957 x 1011m