An object is weighed at the equator by a beam balance and a spring balance, giving readings W b and W s respectively. It is again weighed in the same manner at the north pole, giving readings of W b ' and W s ' respectively. Assume that intensity of earth gravitational field is the same everywhere on the earth’s surface and that the balances are quite sensitive.
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(a, c, d)
the reading of the beam balance will be independent of effective g, so W b = W' b but the reading of the spring balance will Proportional to g effactive
At equator due to centrifugal force of earth, g effactive is less so Reading of spring ballance is less W s < W' b
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