Question

a 200 kg rock lies on the surface of a planet. the acceleration due to gravity on the surface of the planet is 6,0. calculate the mass of the planet if it's radius is 700km​

Answer 1

4.41 × 10²² kg

Step-by-step explanation:

Let the mass of planet be M, rock be m

Therefore,

`net \: force \: on \: rock \: = weight \\ (200)(6) = \frac{(6.67 * 10 {}^( - 11))(200)(m) }{(700000) {}^(2) } \\ m = 4.41 * 10 {}^(22) \: kg`