9th Class Science Work and energy Question Bank Work Power and Energy Formative Subjective Problems

  • question_answer
    Find the power from the graph given below.

    Answer:

    \[P={{P}_{1}}+{{P}_{2}}+{{P}_{3}}\] \[=(2\times 2)+(2\times -2)=(2\times 3)\] \[=4-4+6\] \[=6W\]


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