• Question: Is earths gravitational pull stronger than mars's

    Asked by 596thaf37 to Christie, Dan, David, Dawn, Sian on 20 Jun 2016.
    • Photo: David Robertson

      David Robertson answered on 20 Jun 2016:

      Yes.

      Gravity on the surface of the Earth is about 3 times stronger than gravity on the surface of Mars.

      Mars has about 10.7% the mass(M) of the earth and is about half the diameter(d). The force of gravity on the surface depends on M/(d*d), so gravity on Mars is 0.107/(0.53*0.53) = 0.38 times that of Earth

    • Photo: Sian Thomas

      Sian Thomas answered on 20 Jun 2016:

      David is the expert in this field! Thanks David.

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