What is the potential energy of a 50 newton object resting on the edge of a cliff 30 meters high?

1 Answer
Morgan
Feb 12, 2017

#U_g=1500J#

Explanation:

Gravitational potential energy is given by:

#U_g=mgh#

where #m# is the mass of the object, #h# is the vertical distance of the object above the earth's surface, and #g# is the gravitational acceleration constant, #9.8m/s^2#.

We are given that #h=30m#, and that the weight of the object is #50 N#. Note that this is given as the force of gravity acting upon the object, where #vecF_g=mg#. Therefore, #mg=50N#.

#=>U_g=30m*50N#

#=>U_g=1500Nm=1500J#

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