Question

Tentukan massa bumi jika jari-jari bumi 6,38 × 10^6 m, konstnta gravitasi 6,6× 10^-11 Nm²//kg², dan percepatan garavitasi 9,8 m/s²...,,,
tolong dibantu ya !!

Answer 1

Diket:
r = 6,38.10⁶ m
G = 6,6.10⁻¹¹ Nm²/kg²
g = 9,8 m/s²
Dit: M....?
g = GM/r²
g x r² = G.M
M = (g x r²)/G
M = (9,8 x (6,38.10⁶)²)/6,6.10⁻¹¹
M = (9,8 x 40,7.10¹²)/6,6.10⁻¹¹
M = 398,86.10¹²/6,6.10⁻¹¹
M = 60,4.10²³ Kg