Pulley Question : find tension in rope (Help )

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Homework Help Overview

The discussion revolves around a physics problem involving a pulley system and the calculation of tension in a rope connected to a block. The subject area includes dynamics and forces, particularly focusing on the application of Newton's second law.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the use of free body diagrams and the importance of considering acceleration in their calculations. There are attempts to equate forces to net force and clarify misunderstandings regarding the setup of the problem.

Discussion Status

Participants are actively engaging with each other's reasoning, with some providing guidance on the importance of including acceleration in their calculations. There is recognition of the need to clarify assumptions and interpretations of the problem setup.

Contextual Notes

There is a sense of urgency as participants are preparing for an upcoming exam, which may influence their approach and reasoning. Some participants express uncertainty about their calculations and the implications of their assumptions.

Lori

Homework Statement


upload_2017-11-12_16-21-11.png


Homework Equations



F = ma

The Attempt at a Solution


So , i drew a freebody diagram for the 6k gram block, and the tension to the right of I call T2.
Therefore, the force of gravity component parallel to T2 is (6*9.8)sin30. Therefore, T2 is equal to this value which i found is 29.4! However, i don't think this is right!
 

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Lori said:
However, i don't think this is right!
You think correctly: you forget about the acceleration...
 
BvU said:
You think correctly: you forget about the acceleration...
what do you mean? :(

I see... i got the answer 41. I had to set netforce for each of them to ma
 
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He is saying that you neglected to include the acceleration.
 
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Dr.D said:
He is saying that you neglected to include the acceleration.
i realized that i should be take the sum of the forces on each object and setting it equal to the Fnet. I only realize this till now! Few more hours until the exam :(!
 
Lori said:
i realized that i should be take the sum of the forces on each object and setting it equal to the Fnet. I only realize this till now! Few more hours until the exam :(!
In these questions first try to make free body diagram clearly and then write equation accordingly.
 

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