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Average density of the earth in a region...

Average density of the earth in a region (g is acceleration due to gravity)

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Knowledge Check

  • A planet has a mass of eight time the mass of earth and denisity is also equal to eight times a the average density of the earth. If g be the acceleration due to earth's gravity on its surface, then acceleration due to gravity on planet's surface will be

    A
    2g
    B
    4g
    C
    8g
    D
    16g

  • The value of acceleration due to gravity 'g' on the surface of a planet with radius double that of the earth and same mean density as that of the earth is ( g_(e) =acceleration due to gravity on the surface of the earth )

    A
    `g_(p)=2g_(e)`
    B
    `g_(p)=g_(e)//2`
    C
    `g_(p)=g_(e)//4`
    D
    `g_(p)=4g_(e)`

  • Given, acceleration due to gravity on surface of earth is g. if g' is acceleration due to gravity at a height h above the surface of earth, then

    A
    `g'=g`
    B
    `g' lt g`
    C
    `g' gt g`
    D
    `g'=0`

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