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  3. 9th Class
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  5. Work and energy

9th Class Science Work and energy

  • question_answer 5)
    A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?

    Answer:

                    Here, F = 140 N; s = 15 m. Work done in ploughing the field,  


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