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NCERT CLASS IX - Science Textbook

Chapter 11 - Work and Energy

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?


Force =140N
work done=force*displacement=140N*15m=2100J
                   SO, work done is 2100J                       
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