# What is the gravitational potential energy of a 61.2-kg person standing on the roof of a 10-story building relative to the tenth floor, sixth floor, and first floor? Each story is 3.50 m high.

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I Don't understand this at all :( please help me

I Don't understand this at all :( please help me

##### 1 Answer

Feb 28, 2018

Gravitational Potential Energy =

#### Explanation:

In your case, you can calculate the GPE at each height.

Starting at the top,

So, your max GPE is

The next height is th 6th floor, so it is

The GPE at 21 m on the 6th floor is

So, the difference between the 10th and 6th floor is

Repeat those calculations for the first floor, and you can compare GPE at each height and find the difference in GPE between any two floors