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  5. Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति

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

  • question_answer 59)
                      Calculate the power of a crane in watts, which lifts a mass of 100 kg to a height of 10 in in 20 s.                

    Answer:

                      \[P=\frac{W}{t}\,=\,\frac{mgh}{t}\,=\frac{100\,\times 10\times 10}{20}=500W\,\]                


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