What should be the angular speed of the earth, so that a body lying on the equator may appear weightlessness $(g = 10\,m/s^2, R = 6400\,km)$

  • A

    $\frac{1}{{800}}\,rad/s$

  • B

    $\frac{1}{{400}}\,rad/s$

  • C

    $\frac{1}{{600}}\,rad/s$

  • D

    $\frac{1}{{100}}\,rad/s$

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