Having trouble with Pulleys and FBD's(not homework)

In summary, the speaker is struggling with understanding pulleys and free body diagrams in their physics class. They are looking for a good resource to help them better understand these concepts and have found a helpful link analyzing Atwood's machine. They have also received advice to post their problems in a forum for additional help.
  • #1
Stevo11
17
0
So up until now I have understood physics but we're on Pulleys now and the Free body diagrams are baffling me... My teacher just manages to pull formulae from his behinde and I can't seem to figure out how he derives them... like for acceleration of two objects suspended vertically from a pulley etc...

I don't really know how to explain the root of my issue here but if anyone has a good link to pulleys and FBD's I would be very greatful as I have looked lol.


*yes I realize I just spelled Home work wrong, sorry its been a long day
 
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  • #2
Here's a link analyzing Atwood's machine, one of the standard pulley arrangements: http://hyperphysics.phy-astr.gsu.edu/hbase/atwd.html#c1".

My recommendation is to read your text and try to solve the problems there. When you get stuck, post the problem and your work in the Intro Physics section and someone will be able to give you specific help.
 
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  • #3
ok thanks a lot, I did read the textbook lol, but that link did help me a lot with two objects suspended from a pulley both vertically :smile:
 

FAQ: Having trouble with Pulleys and FBD's(not homework)

What are pulleys and how do they work?

Pulleys are simple machines that consist of a wheel with a grooved rim and a rope or chain running along the groove. They work by distributing weight and force over multiple ropes, allowing for easier lifting or pulling of heavy objects.

How do I determine the direction of tension in a pulley system?

The direction of tension in a pulley system can be determined by using the free body diagram (FBD) method. Draw an FBD for each pulley in the system, and then follow the direction of the rope or chain to determine the direction of tension.

Why is it important to draw an FBD when dealing with pulleys?

Drawing an FBD is important because it helps to visualize and understand the forces acting on the pulley system. It also allows for easier problem solving and identifying any mistakes in calculations.

What are some common mistakes when dealing with pulleys and FBDs?

Some common mistakes when dealing with pulleys and FBDs include forgetting to include all forces acting on the pulley, not considering the direction of tension, and not taking into account the weight of the pulley itself.

How can I improve my understanding of pulleys and FBDs?

To improve your understanding of pulleys and FBDs, you can practice solving different types of problems, watch tutorials or lectures from reliable sources, and seek help from a mentor or tutor if needed. It is also important to have a strong understanding of basic physics principles such as Newton's Laws of Motion.

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