A book on a shelf 2.0 meters above the floor has a mass of 1.5 kg. What is the gravitational potential energy of the book?

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Answer 1 · 2018-06-25T20:47:19

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# "gravitational potential energy " = mgh #

Where #m # is the mass #h # is the height about ground
and #g# the acceleration due to gravity

#g = 9.8 ms^(-2) #

Hence #2 * 1.5 * 9.8 #

# = 29.4 " J" #

Use the value of #g# you have been taught to use, some people advise using #9.8# or #9.81# but some use #10 #