Free body diagram on a block pushed against a ceiling

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Homework Help Overview

The discussion revolves around creating a free body diagram for a 2kg block being pushed against a ceiling by an angled force of 70 degrees. The participants are focused on identifying the forces acting on the block and their respective directions.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the gravitational and normal forces acting on the block, with some confusion about how to represent the applied force at an angle. Questions arise regarding the reference for the 70-degree angle and the direction of the applied force. There is also mention of the role of friction in the setup of the free body diagram.

Discussion Status

Some participants have provided guidance on representing the forces in the diagram, emphasizing the importance of clarity and aesthetics in the presentation. There is an ongoing exploration of how to accurately depict the forces while ensuring the diagram is easy to read.

Contextual Notes

Participants note the challenge of drawing the diagram clearly, especially when using digital tools, and express concerns about the clarity of their representations. The discussion includes considerations of how the forces interact and the importance of accurately depicting their directions.

Madelin Pierce
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Homework Statement


A 2kg block is being pushed along a ceiling with friction by an angled force of 70 degrees. I'm asked only for the free body diagram.

Homework Equations

The Attempt at a Solution


I figured both the gravitational and normal force would point downwards, but the force applied at an angle(figure an angle someone would apply by pushing with arms) I'm confused on how to draw on the diagram.
 
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Madelin Pierce said:

Homework Statement


A 2kg block is being pushed along a ceiling with friction by an angled force of 70 degrees. I'm asked only for the free body diagram.
70 degrees with respect to what?
Madelin Pierce said:
I figured both the gravitational and normal force would point downwards, but the force applied at an angle(figure an angle someone would apply by pushing with arms) I'm confused on how to draw on the diagram.
What is the direction of the force? That's the direction the force vector will make with the block.
 
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I forgot to add that friction plays a role. I'm just confused on how to set up the free body diagram
 
Your applied force looks good. Now you need to add gravitational force and frictional force vectors. In which directions do they act?
 
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Okay, it looks like you've got all the forces represented. That's good. What I would suggest, however, is that they be presented a bit more aesthetically. Often, leaving in the depiction of body being acted on makes things easier to recognize and process. So maybe something like this:

upload_2018-10-24_19-57-38.png


The placements of the force vectors around the block are not as important as getting their directions right, but making your diagram easy to read (especially by markers!) is at least a good portion of the battle :smile:
 

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Ok, thank you. I was drawing it on my computer sketch, so that's why it wasn't as clear.
 
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