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A planet has a mass of 6.22 × 1023 kg and a radius of 2.51 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 77.7-kg person weigh on this planet?

  • Physics -

    W = m•g =G•m•M/R²
    g= G•M/R²
    the gravitational constant G =6.67•10⁻¹¹ N•m²/kg²,
    Earth’s mass is M = 5.97•10²⁴kg,
    Earth’s radius is R = 6.378•10⁶ m.

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