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The distance between the moon and earth ...

The distance between the moon and earth is `3.8 xx 10^(8)m`. Find the gravitional potential at the mid point of the joining them. Given that the mass of the earth is `6 xx 10^(24) kg`, mass of moon `= 7.4 xx 10^(22) kg` and `G = 6.67 xx 10^(11) Nm^(2)kg^(-2)`.

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The value of 'g' on the surface of the earth is 9.81 ms^(-2) . Find its value on the surface of the moon . Given mass of earth 6.4 xx 10^(24) kg , radius of earth = 6.4 xx 10^(6) m , mass of the moon = 7.4 xx 10^(22) kg , radius of moon = 1.76 xx 10^(6) m .

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