A body weight 49 N is on spring balance at the north pole. What will be its weight recorded on the same weighing machine, if it is shifted to the equator?Use g=GMR2=9.8 ms−2 and radius of earth, R=6400 km

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49.17 N

49.83 N

49 N

48.83 N

answer is D.

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Detailed Solution

At pole, there is no effect of rotation of earth, ∴mg=49 N⇒m=499.8=5kgAt equator, Apparent Weight =mg−ω2R=59.8−2π24×360026400×103=48.83N

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