Conquer Your Engineering Rivalry: Defeating Prof with Expert Solutions

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Homework Help Overview

The discussion revolves around a challenge posed by an engineering professor, where the original poster seeks assistance in solving a complex problem related to static and kinetic friction, torque, and angular acceleration. The subject area appears to involve concepts from mechanics and dynamics in engineering physics.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to outline their understanding of the problem by discussing equations related to static friction, linear acceleration, and torque. Some participants question the assumptions regarding the relationship between static and kinetic friction, while others suggest exploring the implications of no-slip conditions in the context of the problem.

Discussion Status

The discussion is ongoing, with participants providing partial insights and references to external resources. There is an acknowledgment of the need to show effort in problem-solving, and various interpretations of the physics involved are being explored without reaching a consensus.

Contextual Notes

The forum rules require participants to demonstrate effort in solving the problem, which influences the nature of the responses and the guidance provided.

turbotrip
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Well here's the deal, i kinda have this rivalry going on with this one engineering proff so naturally i took on a challenge from him that i couldn't find the answer to this problem. I don't have to understand it or be able to solve it even (because its a lot more advanced then our class), but I just need a correct solution to show him and he will admit defeat. So for all of you out there who have ever wanted to get back at your professors, please help me defeat mine LOL :-p
 

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unfortunately for you, the rules of our fourms state that you need to show that you have made some effort to solve the problem. We do not post complete solutions.
 
oh man this stuff is pretty tough, but ill give it a try:

Fmax = (static) * (normal force)
That should give you your maximum in the static friction condition

(linear acceleration) = Mu(kinetic) * N
F=ma will give you acceleration

Static friction x radius = torque
torque / angular moment = angular acceleration
angular acceleration x radius = linear acceleration
static friction + ma should be your total force

For the second part, since it breaks static friction, angular acceleration is no longer related to linear acceleration

and that's about as far as i got
 
Last edited:
This might be useful
http://hyperphysics.phy-astr.gsu.edu/hbase/mi.html

No slip implies the radial velocity of the surface of the disc is equal in magnitude to the linear velocity of the cm of the disc.

There is the force associated with translation as well as rotation.
 

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