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why would you need to divide mass by gravity?

  • physics -

    You multiply, not divide, mass by gravity to get weight, which is a force.
    Mass is a characteristic of the material. It is the same here and on the moon or anywhere.
    Weight, the force the mass exerts down on a scale, depends on the local gravitational acceleration and is for example 1/6 as large on the moon as here on earth.

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