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Gravitation question

2017 · 8 Apr · Shift 1 · Q71
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Gravitation question

2017 · 8 Apr · Shift 1 · Q71

JEE MainPhysicsGravitationMCQ+4 / −1
If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the speed with which the earth would have to rotate about its axis so that the person at the equator will weigh 34{3 \over 4}43​ W. Radius of the Earth is 6400 km and g=10 m/s2.
  1. A
    1.1 ×\times× 10−3 rad/s
  2. B
    0.83 ×\times× 10−3 rad/s
  3. C
    0.63 ×\times× 10−3 rad/s
  4. D
    0.28 ×\times× 10−3 rad/s
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