Answers

2015-10-03T15:50:32+05:30
Weight of  the child =160 N
                              =x * 9.8 (gravity)
thus,  x=160/9.8
           =16.33 kg
now,
R(radius of earth) =6.4 x 10
distance from the centre =3.6 x 10 + 6.4 x 10
                                        =100
g=GM/R²
 =6.673 x 10⁻¹¹ x 6 x 10²⁴ / 100²
 =38(approx) x 10²⁴⁻¹⁵
 =38 x 10⁹
weight of the child =16.33x38x10⁹


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