J & K CET Engineering J and K - CET Engineering Solved Paper-2011

  • question_answer
    Consider earth to be a sphere of mass M and radius R. The acceleration due to gravity at a depth d below the earth's surface \[({{g}_{d}})\] is

    A)  \[{{g}_{d}}=g\left\{ 1-\frac{d}{R} \right\}\]

    B)  \[{{g}_{d}}=g\left\{ 1-\frac{2d}{R} \right\}\]

    C)  \[{{g}_{d}}=g\]

    D)  \[{{g}_{d}}=g\left\{ 1+\frac{d}{R} \right\}\]

    Correct Answer: A

    Solution :

    The acceleration due to gravity at a depth d below the earth's surface \[{{g}_{d}}=g\left[ 1-\frac{d}{R} \right]\]


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