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  5. Gravitation and Floatation

9th Class Science Gravitation and Floatation Question Bank Gravitation Conceptive Subjective Problems

  • question_answer
    A body weighs 63 N on the surface of the earth. How much will it weigh at a height equal to half the radius of the earth? (a) 10 N   (b) 20 N   (c) 18 N   (d) 28 N

    Answer:

    At a height h above the surface of the earth, the value of g is \[{{g}^{1}}=\frac{g}{{{\left( 1+\frac{h}{R} \right)}^{2}}}\]


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