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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a
49.17 N
b
49.83 N
c
49 N
d
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
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