A body weighs 49 N on a 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 = G M R 2 = 9 . 8 m s - 2 and radius of earth, R = 6400 km . ]

Question

A body weighs 49 N on a 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 = G M R 2 = 9 . 8 m s - 2 and radius of earth, R = 6400 km . ], 49 . 17 N, 48 . 83 N, 49 . 83 N, 49 N

MARKS App · Accepted Answer

Weight of pole = m g = 49 N At equator due to rotation = g e = g - R ω 2 so W = m g e = m g - R ω 2 ∴ W P > W e W p = 49 N So, W e = 48 . 83 N . W e 49 N

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