The speed of earth's rotation about its axis is \( \omega \). Its speed is increased to \( x \) ...

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The speed of earth's rotation about its axis is \( \omega \). Its speed is increased to \( x \) times to make the effective acceleration due to gravity equal to zero at the equator. Then \( x \) is[AFMC 2006]
(a) 1
(b) \( 8.5 \)
(c) 17
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