How Can We Determine Earth's Mass Using a Pendulum?

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Homework Help Overview

The discussion revolves around designing an experiment to determine Earth's mass using a pendulum, focusing on gravitational concepts and experimental limitations typical in a high school setting.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the use of gravitational concepts, including the gravitational constant and Earth's radius, while questioning the feasibility of measuring these in a lab environment. There is also discussion about the role of a pendulum in relation to gravitational acceleration.

Discussion Status

The discussion is active with various suggestions and considerations being raised, including the potential use of a Foucault pendulum and ancient methods for measuring Earth's radius. However, there is no explicit consensus on the best approach or the feasibility of certain measurements within the constraints of a high school lab.

Contextual Notes

Participants note potential constraints such as the availability of specific constants and the practical challenges of conducting experiments with limited equipment.

Bissli
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My class was given an assignment to design an experiment where we could determine the mass of the Earth, using the equipment found in our lab. (basic high school stuff) I know we use gravitation pull in some way, towards the sun (?) but all the research I've done and explanations I've found, I'm having a hard time understanding. Any help would be great, thanks.
 
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are you allowed to use the gravitational constant G?
 
Not only G,he should use the mean Earth radius as well...I think this is more a theoretical problem.After all,in the lab u could come up only with "g"...Maybe a Foucault pendulum would be useful as well... :wink:

Daniel.
 
He can find Earth's radius using the ancient greek method... measuring the shadow of two sticks far away... cell phone and auto mobile make this experiment doable... but i don't think it is possible to find G in a high school lab...
 
i think we are allowed to use the constant, at least i am, and could someone please explain how a pendelum would help?
 
A pendulum's oscillation depends on the gravitational acceleration.
 

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