What is the gravitational potential energy of a # 4 kg# object on a shelf # 3/5 m # high?

1 Answer
Aug 1, 2017

Answer:

#U = 23.5# #"J"#

Explanation:

The gravitational potential energy #U# of this object is given by the equation

#U = mgh#

where

  • #m# is the mass of the object (#4# #"kg"#)

  • #g# is the acceleration due to gravity near Earth's surface (#9.81# #"m/s"^2#)

  • #h# is its height, in #"m"#, above the ground (#3/5# #"m"#)

Thus, we have

#U = (4color(white)(l)"kg")(9.81color(white)(l)"m/s"^2)(3/5color(white)(l)"m")#

#= color(red)(ul(23.5color(white)(l)"J"#