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the mass of a body is 50 kg on the surface of the earth.find its weight on the surface of a planet whose mass is double than the mass of the earth and radius is 5 times the radius of the earth

  • physics -

    Let g', M' and R' be values for the new planet.
    Let g be the acceleration of gravity for Earth, 9.8 m/s^2

    g' = G*m'/R'^2 = 2G*Me/(5R2)^2)
    = (2/25)G*Me/Re^2 = 0.08 g

    Weight = 0.08 M g = 39.2 N

    Weight = (0.08)M g =

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