Conservation of Energy equation help

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Homework Help Overview

The discussion revolves around a problem in the context of conservation of energy, specifically involving a stone falling to the ground and the energy transfer associated with its motion. The original poster seeks to determine the height from which the stone must fall to achieve a specified increase in energy.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to relate mass, gravitational acceleration, and energy to formulate an equation for height. Some participants suggest considering kinetic energy equations, while others express uncertainty about the connections between the variables involved.

Discussion Status

The discussion is ongoing, with participants exploring different aspects of the problem. Some guidance has been offered regarding kinetic energy, but there is no explicit consensus or resolution yet.

Contextual Notes

The original poster mentions specific values for mass and energy but does not provide complete information on the setup or any constraints imposed by homework guidelines.

MentalScrew
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Homework Statement


Okay, I have a total mass of 0.255 of a stone that strikes the ground. Assuming that the stone is initially at rest when it begins falling, how high must the stone be above the ground for the energy of the stone and ground to increase by 2450 J?


Homework Equations


Okay, so m = .255, g = 9.81 and internal energy = 2450, what I need to know is how to arrange them so that I can find an equation for height...



The Attempt at a Solution



Yeah, I really need to know...
 
Physics news on Phys.org
To get you started, Kinetic energy = 1/2 m v2
 
Yeah, I'm a total idiot. I know that has at least something to do with the equation, but I'm not completely sure. Anymore information you can give me?
 

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