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

  • question_answer
    Coolie A takes 1 min to raise a box of mass m through a height of 2.0 m. Another coolie 6 takes 30 s for the same job. Which one has greater power?

    A) Coolie A

    B) Coolie B

    C) Both have the same power

    D) Cannot say

    Correct Answer: B

    Solution :

    \[\text{Power=}\frac{\text{Work}}{\text{time}}\] \[\therefore \] Work done by both of them is same. Hence, coolie who have taken less time has greater power i.e., coolie B.


You need to login to perform this action.
You will be redirected in 3 sec spinner