kak minta tolong dong jawap pertanyaan no 3,4,5

3.
g/g' = ( Mb / Mp). (Rp/Rb)²
9,8/g' = (1/18).(9/1)²
9,8/g' = 1/18.81/1
9,8/g' = 81/18
g' = 9,8.18.81
g' = 2,18 m/s²

maaf kalo salah