The angular speed of earth, so that the object on equator may appear weightless, is $(g = 10\,m/{s^2}$, radius of earth $6400\, km$)

  • [AIIMS 2011]
  • A

    $1.25 \times {10^{ - 3}}\,rad/sec$

  • B

    $1.56 \times {10^{ - 3}}\,rad/sec$

  • C

    $1.25 \times {10^{ - 1}}\,rad/sec$

  • D

    $1.56\; rad/sec$

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