Change in Potential Energy = mgh = (9.0kg)(9.8m/s^2)(1.3m) = 116.4 Joules

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Homework Help Overview

The problem involves calculating the change in potential energy for a 9.0 kg monkey swinging to a branch that is 1.3 m higher. The relevant equations for gravitational potential energy are provided, and participants are discussing the appropriate formula to use in this context.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are considering which equations are relevant to the problem, specifically questioning whether to use gravitational potential energy or other forms of energy. There is discussion about the correct values to use in the calculations and the interpretation of the problem statement.

Discussion Status

There is an ongoing exploration of the correct approach to the problem, with participants providing hints and suggestions. Some participants have expressed uncertainty about the values being used and the equations applicable to the situation. No consensus has been reached yet.

Contextual Notes

Participants are noting potential discrepancies in the values used for calculations, specifically questioning the mass of the monkey and the height in the context of the problem. There is also a reference to another question, indicating that the original poster may have multiple inquiries related to similar concepts.

tigerwoods99
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Swinging Monkey!

Homework Statement


A 9.0 kg monkey swings from one branch to another 1.3 m higher. What is the change in potential energy?

Homework Equations



Ke = (1/2)mv^2
GPE = mgh
EPE = (1.2)Kx^2


The Attempt at a Solution

 
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Hi tigerwoods99! :smile:

(try using the X2 tag just above the Reply box :wink:)
tigerwoods99 said:
Ke = (1/2)mv^2
GPE = mgh
EPE = (1.2)Kx^2

ok … which of those equations is it? :smile:
 


Take a guess. Here's a hint: you only need one formula, and it involves the thing you're trying to find.
 


I am going to take a guess and say its the Gravitational Potential because if the object is higher the potential is greater.

So would it be final - initial potential

(8*9.8)(1.3) - (8*9.8)(0) = 101.92?
 


I'm not going to check your calculator work but you used 8m not 9m not sure which want the problem actually says :smile:. Other than that looks good.
 

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