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Keeping the diameter unaltered , if the ...

Keeping the diameter unaltered , if the mass of the earth is doubled , then what will be the length of a day ?

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Knowledge Check

  • Keeping the mass constant , if the radius of the earth is halved, then the span of a day

    A
    will decrease
    B
    will increase
    C
    will remain unchanged
    D
    no conclusion can be arrived at

  • Keeping the mass fixed , if the radius of the earth is halved, the acceleration due to gravity at any place will be

    A
    half of the original
    B
    one-fourth of the original
    C
    doubled of the original
    D
    four times of the original

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    Calculate the angular velocity of the earth for which effective acceleration due to gravity at the equator becomes zero. In this condition, what will be the length of the day ? Take R_e =6400 km and g=10 m*s^(-2)

    If the radius of the earth decreases by (1)/(2)% , then what will be the change in the length of a day? Assume that the earth is a uniform sphere and its moment of inertia, I= (2)/(5) "MR"^(2) , where M and R are the mass and the radius of the earth.

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