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what sould be the angular speed with which the earth have to rotate on its axis so that a person on the equator would weight 3/5th as much as present..??

  • physics - ,

    Solve this equation for Earth angular speed in radians per second:

    Mg - M Rw^2 = 0.6 M g
    Cancel out the M's

    0.4 g = R w^2
    w = sqrt(0.4g/R)

    Use R = 6371*10^3 m

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