Allistarz Allistarz
  • 04-05-2016
  • Physics
contestada

If Mike does 25.5 J of work lifting a book 1.5 m onto a shelf what is the mass of the book in kilograms

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elskywalker
elskywalker elskywalker
  • 04-05-2016
lifting the book means that the object gains gravitational potential energy. GPE=mass*gravitational field strength*height, ∴m=GPE/gh, m=25.5/10*1.5=1.7 kg
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