11th Class Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति

  • question_answer 34)
                      A bicyclist comes to a skidding stop in 10 m. During this process, the force on the bicycle due to the road is 200 N and is directly opposed to the motion. The work done by the cycle on the road is                 (a) + 2000 J                          (b) ? 200 J                 (c) zero                                 (d) ? 20,000 J                

    Answer:

                      (c) Work done by the cycle on the road = zero as there is no displacement.                


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