Calculating Skier's Height Over Ramp and Hedge Using Kinematics and Energy

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Homework Help Overview

The problem involves a skier descending a hill and launching off a ramp, with the goal of determining the height of a hedge that she just clears. The scenario is set within the context of kinematics and energy principles, specifically focusing on the conservation of mechanical energy and the effects of gravitational forces.

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Approaches and Questions Raised

  • Participants express confusion about the classification of the problem, debating whether it falls under dynamics, energy, or kinematics. Some suggest that a roller coaster analogy may apply, emphasizing the conservation of mechanical energy. Others raise questions about the relevance of angles in the problem and seek clarification on how to approach the calculations.

Discussion Status

The discussion is ongoing, with participants sharing various thoughts and approaches. Some guidance has been offered regarding the conservation of energy, but there is no explicit consensus on the method to solve the problem. Multiple interpretations of the problem's requirements are being explored.

Contextual Notes

Participants mention the absence of friction and the initial conditions of the skier's motion. There is also a reference to the problem being part of a contest, which may imply specific constraints or expectations for the solution.

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A skier swoops down a hill and over a ramp as in the attached figure. She starts from rest at a height of 16 m, leaves the 9.0 m ramp ata an angle of 45 degrees, and justt clears the hedge on her way down, making an angle of 30 degrees with the vertical as she does. Assuming that there is no friction, and that she is small compared to the dimensions of problem, solve for H, the height of the hedge in metres.


answer:
I am confused because I can't figure out what type of question this is! Is it dynamics or energy or combined? I think it can be solved using kinematics, but the question is on momentum and energy assignment. I would appreciate some help guiding me how to do this.
 

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I don't know if this helps, but I think that roller coaster approach can be taken for this question.

Which would mean that the mechanical energy will be conserves and the only form of force would be from gravity.

We will also have Potential Energy (that will be max at top of cuve and kenetic energy (that will be 0 at top and increase as skier comes down).

KE = 0.5 * mass * (speed)^2

PE = mass * g * height
 
Help meeee! Please!
 
Is it true that angle of decline and incline will have no effect in this problem?
 
How to do this question?
 
this is sir isaac Newton contest question!
 
The answer for the question is 2.0 m, but I don't know how to do it. Can anyone please help?
 

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