Work done by gravity on a snowboarder descending a 19° ramp

[jabbie3]

Homework Statement

A snowboarder of mass 85 kg slides down the trail shown in the figure below. The first part of the trail is a ramp that makes an angle of 19degrees with the horizontal, and the final portion of the trail is flat. Find the work done by gravity on the snowboarder as she travels from the beginning to the end of this trail. For the figure use h = 44 m.

https://chip.physics.purdue.edu/protected/GiordanoMimg/chapter6/06P10.jpg

Homework Equations

I am really clueless

The Attempt at a Solution

Again, clueless, i really need help with this..thanks

 

[Nabeshin]

Dang that is one awesome picture.

Do you know the equation for potential energy due to gravity?

 

[jabbie3]

Yes.. Isnt it PE^g=mgy

 

[Delphi51]

The work done by gravity is the decrease in gravitational potential energy, mgh.

 

[jabbie3]

Thanks guys! I didnt think it was that easy..