What is the gravitational potential energy of a # 9 kg# object on a shelf # 7/4 m # high?

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Answer 1 · 2018-05-09T22:23:17

154.35 Joules

Gravitational Potential Energy has a very simple equation:

#PE=mgh#

#PE# is the Potential Energy, #m# is mass, #g# is the acceleration due to gravity, and #h# is the height above ground.

We know mass, height, and gravitational acceleration, so we can go ahead and calculate the Potential Energy:

#m=9kg#

#g=9.8 m/s^2#

#h=7/4 m#

#PE=9xx9.8xx7/4#

#PE=63/4xx9.8#

#PE=617.4/4#

#color(green)(PE=154.35J#