A body has a weight 90 kg on the earth's surface, the mass of the moon is 1/9 that of the earth's mass and its radius is 1/2 that of the earth's radius. On the moon the weight of the body is

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45 kg

202.5 kg

90 kg

40 kg

answer is D.

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Detailed Solution

gmge=MmMe×ReRm2=19212=49⇒gm=49ge∴ Wm=49×We=49×90=40kg

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