# A hat weighing #5"N"# is placed on a hook #1.5"m"# above the ground. What is the potential energy of the hat?

##### 1 Answer

Dec 23, 2016

#### Explanation:

Gravitational potential energy is given as

#U_g=mgh#

where

We're given the *weight* of the hat, however, not the mass. The weight of a stationary object is given as the force of gravity acting upon it, which is the product of its mass and

#W=vecF_g=mg#

So,

#=>U_g=(5N)(1.5m)=7.5Nm=7.5J#