Is this a conservation of energy problem?

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Homework Help Overview

The discussion revolves around a problem involving a pendulum, specifically focusing on the work done on it. The original poster provides some details about the pendulum's length, mass, and displacement but lacks the complete problem statement.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the relationship between mass displacement and height, questioning how to determine the height of the mass based on the given information. There is also a focus on the need for a sketch to clarify the situation.

Discussion Status

Participants are actively engaging with the problem, with some suggesting that a sketch could help clarify the dimensions involved. There is an ongoing exploration of how to calculate the height of the mass, with no clear consensus reached yet.

Contextual Notes

There is an acknowledgment of missing information, particularly the height of the mass, which is causing confusion among participants. The original poster's lack of a complete problem statement is also noted.

Lori

Homework Statement



I'm sorry but I don't have the exactly problem written down but I know the givens.

So the question involves finding work done on a pendulum hanging from the ceiling.

Homework Equations


I was given the the length of the string is 1m. That a mass hangs at the bottom of string and it's 2kg. That it displaces .5 meters to the left.

The Attempt at a Solution


I was thinking that I had to do mgh = 1/2mv^2 but then did know how to get velocity.

Any clues?
[/B]
 
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Velocity of what?

Did you draw a sketch? What is the height of the mass at the end (and initially)?
 
mfb said:
Velocity of what?

Did you draw a sketch? What is the height of the mass at the end (and initially)?
Yes I've done the sketch. There was no given height! That's why I'm kinda a bit lost and confused.
 
Lori said:

Homework Statement



I'm sorry but I don't have the exactly problem written down but I know the givens.

So the question involves finding work done on a pendulum hanging from the ceiling.

Homework Equations


I was given the the length of the string is 1m. That a mass hangs at the bottom of string and it's 2kg. That it displaces .5 meters to the left.

The Attempt at a Solution


I was thinking that I had to do mgh = 1/2mv^2 but then did know how to get velocity.

Any clues? [/B]
Velocity
Lori said:
Yes I've done the sketch. There was no given height! That's why I'm kinda a bit lost and confused.
But you have given mass displaced.5 meter and length of string 1meter from this you can calculate height
 
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Abhishek kumar said:
Velocity

But you have given mass displaced.5 meter and length of string 1meter from this you can calculate height

I'm not really recognizing how we can find height?
 
I don't think you have done the sketch properly. Draw the sketch and dimension where the mass is located.
 
Lori said:
Like this you can do
 

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Lori said:
There's no change in height?
You show the figure i have posted?
 

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