What is the gravitational potential energy of a # 6 kg# object on a shelf # 5/3 m # high?

1 Answer
Meave60
Dec 10, 2015

The gravitational potential energy is #"100 J"#.

Explanation:

#"PE"_"grav"=m*g*h#, where #m# is mass in kg, #g# is acceleration due to gravity, #"9.81 m/s^2"#, and #h# is the height in meters.

Given/Known
#m="6 kg"#
#g="9.81 m/s"^2"#
#h="5/3 m"#

Solution
Substitute given and known values into the equation and solve.

#"PE"_"grav"=6"kg"xx9.81"m/s"^2xx5/3"m"#

#"PE"_"grav"=100N*m="100 J"# (rounded to one significant figure)

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