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9th Class Science Work and energy Question Bank 9th CBSE Science Work and energy

  • question_answer
        The height of Qutub Minar is 75 m. How much work is done when a 60 kg man reaches its top?

    Answer:

       As,    W = mgh Here h = 75m, w = 60 kg,                  So,   W = 60 x10 x 75 = 45000 J     


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