The mass of the earth is 6xx10^(24) kg a...

The mass of the earth is `6xx10^(24)` kg and that of the Moon is`7.4 xx10^(22)` kg. The constant of gravitation G is `6.67 xx10^(-11) "Nm"^(2) "kg"^(-2)` The potential energy of the system is`-7.79xx10^(28)`J The mean distance between the Earth and Moon is` ..........` metre.

`3.80 xx10^(8)`

`3.37xx10^(8)`

`7..60xx10^(8)`

`1.90xx10^(2)`

Text Solution

Verified by Experts

The correct Answer is:

`U = (-GMm)/r rArr = 3.8 xx10^(8)m`

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