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11th Class Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Work, Energy And Power Conceptual Problems

  • question_answer
    Is it necessary that work done in the motion of a body over a closed loop is zero for every force in nature? Why?

    Answer:

                    No. The work done in the motion of body over a closed loop is zero only in case of a conservative force but it is not zero in case of a non-conservative force like friction.


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