Question

The mass of earth is 6×10power 24 kg and radius of earth is 6.4×10power6 m the magnitude of force betweennthe mass of 1 kg and the earth is a) 9.770N b)9.810N c)9.830N d)9.790N

Answer 1

I think that the answer would be A

Answer 2

Hai friend,

The formula is

F=G Mm/r²

Where G= 6.67×10^-¹¹
M=1 kg
m=6×10²⁴ kg
R=6.4 ×10^6

On simplifying,

F=40.02×10¹³/40.96×10¹²

F=0.9770×10¹

F=9.770 N.

The answer is option(a).

Hope this helped you a little!!!