Answer to Question #138539 in Mechanics | Relativity for mandy ave

Mechanics | Relativity

Question #138539

The book is lifted 1.0-meter from the ground and has a potential energy of 4.9-Joule. What is the mass of the book?

Expert's answer

"PE=mgh"

PE =potential energy

m=mass

g= gravity "9.8m\/s^2"

h=height

"m=\\frac{PE}{gh}"

"m=\\frac{4.9}{9.8\\times1}=0.5kg"

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