A hat that weighs 5 newtons is hanging from a hook 1.5 meters above the floor. how much gravitational potential energy does the hat have?

2 Answers
Apr 9, 2018

#7.5 J#

Explanation:

#PE =mgh#

Since #F=mg# in this case

#PE= Fh#

#PE= 5 N*1.5 m= 7.5 J#

Apr 10, 2018

#7.5# joules

Explanation:

Gravitational potential energy is given through the equation,

#"GPE"=mgh#

  • #m# is the mass of the object in kilograms

  • #g# is the gravitational acceleration in meters per second

  • #h# is the height of the object in meters

We know that weight is given by #W=mg#, so the equation becomes,

#"GPE"=W*h#

We have the weight of the object and the height it's placed on, so we can plug that into the equation, and get,

#"GPE"=5 \ "N"*1.5 \ "m"#

#=7.5 \ "J"#