Question

please solve these please

Answer 1

The mass of earth =6×10^24kg
The mass of moon=7.4×10^22kg
Distance between the earth and The moon =d
= 3.84×10^5km
=3.84×10^5×1000m
=3.84×10^8m
G=6.7×10^-11 Nm^2/kg^2
F=G×M×m÷d^2
=(6.7×10^-11×6×10^24×7.4× 10^22(÷(3.84×10^8)^2
=2.01×10^20N.
so,the force exerted by the earth on the moon is 2.01×10^20N.