The mass of the earth is 6 x 10'24 kg and that of moon is 7.4 x 10'30kg. If the distance between the earth and the moon is 3.84 x10'5km,calculate the force exerted by the earth on the moon. G= 6.7 x 10'-11 Nm'2/kg2

F=Gm1m2r2F=6.7×10-116×1024×7.4×1030(3.84×108)2F=2×1028N

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