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Orbital Period is given by
r=1.6448442*10^{7} m
Orbital speed is given by
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a)
acceleration due to gravity is given by
g =GM/R^{2} = (6.673*10^{-11})(7.35*10^{22})/(1.74*10^{6})^{2}
g=1.62 m/s^{2}
b)
For neptune
g=(6.673*10^{-11})(1.02*10^{26})/(2.48*10^{7})^{2}
g=11.07 m/s^{2}
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Given
m_{1}+m_{2}=5.6 Kg
m_{2}=5.6-m_{1}=
Gravitation force between two masses is given by
F=GM_{1}M_{2}/r^{2}
8.7*10^{-9} = (6.673*10^{-11})m_{1}(5.6-m_{1})/0.175^{2}
5.6m_{1}-m_{1}^{2} = 4
m_{1}^{2}-5.6m_{1}+4=0
m_{1}=4.76 kg
m_{2}=0.84 kg
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