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11 June, 17:15

Find the magnitude of the gravitational force a 68.4 kg person would experience while standing on the surface of earth with a mass of 5.98 à 1024 kg and a radius of 6.37 à 106 m. the universal gravitational constant is 6.673 à 10â11 n · m2 / kg2. answer in units of n.

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  1. 11 June, 17:32
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    Given: Mass of a person M = 68.4 Kg.

    Mass of earth Me = 5.98 x 10²⁴ Kg

    Radius of earth r = 6.37 x 10⁶ m

    G = 6.67 x 10⁻¹¹ N. m²/Kg²

    Required: F = ?

    Formula: F = GMeM/r²

    F = (6.67 x 10⁻¹¹ N. m²/Kg²) (5.98 x 10²⁴) (68.4 Kg) / (6.37 x 10⁶ m) ²

    F = 672.41 N
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