A body weighs 30kg on earth. Given that the mass of earth is 6*10^29kg, its radious is 6.4*10^6m, G=6.7*10^-11Nm^2kg^-2. What will be:

a. The force of attraction between the body and the earth.

b. Acceleration produced by body.

c. Acceleration produced by earth

a. The force of attraction between the earth and the body is
F=GMmR2F=6.7×10-11×6×1029×306.4×1062=29.4×106 N
b. Acceleration produced by the body on the earth,
aE=FM=6.7×10-11×306.4×1062=4.9×10-23 m/s2
c. Acceleration produced by earth on the body,
ab=Fm=6.7×10-11×6×10296.4×1062=9.81×105 m/s2

Note: The mass of the earth is actually 6×1024 kg.

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