Calculating Work Done by Gravity on a Sliding Snowboarder | Ramp Angle of 19°

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Homework Help Overview

The problem involves calculating the work done by gravity on a snowboarder sliding down a ramp inclined at 19 degrees, with a height of 44 meters. The context is centered around gravitational potential energy and its relation to work done during the descent.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relationship between gravitational potential energy and work done, with some expressing uncertainty about the relevant equations. Questions about the basic principles of potential energy are raised.

Discussion Status

Participants are exploring the concepts of potential energy and work done by gravity. Some have provided equations related to gravitational potential energy, while others express their initial confusion. There is a sense of progress as participants begin to connect the concepts.

Contextual Notes

One participant indicates a lack of clarity regarding the problem, suggesting that additional guidance may be needed to fully understand the application of the equations discussed.

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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
 
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Dang that is one awesome picture.

Do you know the equation for potential energy due to gravity?
 
Yes.. Isnt it PEg=mgy
 
The work done by gravity is the decrease in gravitational potential energy, mgh.
 
Thanks guys! I didnt think it was that easy.. :blushing:
 

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