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

  • question_answer
    Four forces of equal magnitude are acting on an object as shown in figure. Which of the following forces does the least work?

    A) P                                 

    B) Q                    

    C) R                     

    D)        S                     

    Correct Answer: B

    Solution :

    There is no work done when the force and the displacement are perpendicular to each other. The maximum work is done when the force applied is parallel to the direction of movement.


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