gravitational-force

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					                                                                    Gravitational Force      1


                               Gravitational Force
Sample: Find the distance between a 0.300 kg billiard ball and a 0.400 kg billiard ball if
the magnitude of the gravitational force between them is 8.92 x 10-11 N. 3.00 x 10-1 m




   1. What must be the distance between two 0.800 kg balls if the magnitude of the
      gravitational force between them is equal to 8.92 x 10-11 ? .692 m




   2. Mars has a mass of about 6.4 x 1023 kg, and its moon Phobos has a mass of about
      9.6 x 1015 kg. If the magnitude of the gravitational force between the two bodies
      is 4.6 x 1015 N, how far apart are Mars and Phobos? 9.4 x 106
                                                              Gravitational Force    2



3. Find the magnitude of the gravitational force a 66.5 kg person would experience
   while standing on the surface of each of the following planets:

          Planet         Mass                  Radius
          Earth          5.97 x 1024 kg        6.38 x 106 m                  651 N
          Mars           6.42 x 1023 kg        3.40 x 106 m                  246 N
          Pluto          1.25 x 1022 kg        1.20 x 106 m                  38.5 N

				
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posted:8/12/2011
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