Torque, Angular Momentum, and Conservation of Mass Problems

AI Thread Summary
The discussion focuses on difficulties in understanding and solving problems related to torque, angular momentum, and conservation of mass. The user struggles with applying free-body diagrams to these concepts and seeks effective methods for approaching such problems, particularly in determining the optimal angle and force needed to tip a block. They express a need for resources that explain the relationships between relevant equations rather than just presenting definitions. Recommendations for books and online materials are requested to enhance understanding of these physics topics. Overall, the conversation emphasizes the importance of developing problem-solving strategies and finding comprehensive educational resources.
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Homework Statement


I am studying the topics listed above and have been having great difficulty getting my problems going. To explain, I am having difficulty seeing where the problem should go and attacking in that direction. I can draw out free-body diagrams but I can't see how to solve the problem using them.

Example problem: A string is attached to a top edge of a block, and there is a pivot (or sufficient friction) to keep the block from sliding. At what angle should we pull so that we can use the least force to tip the block? How much force is required?

I am not looking for an answer but rather a method to approaching such problems that ask for general solutions to the topics listed above.

Lastly, and perhaps most importantly, finding relationships between equations is something need to work on. Any resources?

Homework Equations


Not sure if this applies to my question. If so, there are many.[/B]

The Attempt at a Solution



No Idea how to start[/B]
 
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Sorry, I'll be looking into it.
 
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Thank you for your reply. Unfortunately, those links provided only little help. I have yet to find a book or resource that explains torque, angular momentum, or conservation of momentum (just noticed it is wrong in the title). They all just state the equations and define what they mean. Any book recommendations?
 
Angular and Linear momentum.
Angular momentum and torque.
https://www.stcharlesprep.org/01_parents/vandermeer_s/Useful%20Links/Honors%20Physics/pdf%20lectures/Torque.pdf.
http://web.mit.edu/8.01t/www/materials/modules/chapter19.pdf.
http://www.colorado.edu/physics/phys1110/phys1110_fa12/LectureNotes/LinearMomentum.pdf.
If you need anything else...Simply let me know. Pssst! (did I help?) ^_^
 
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Wow, if there is a god, he must be good for allowing me to live long enough to meet you. Your help is very much appreciated my good man.
 
Glad I helped (Acting like a gentleman)...Background: Feeling extremely good about myself helping others
 
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Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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