Desperate for help -- studying an angular motion problem

AI Thread Summary
The discussion revolves around a student struggling with angular motion concepts after failing strength of materials and dynamics courses due to an accelerated curriculum. The student is attempting to calculate the force acting on a receiver when a slender rod rotates and comes to a stop, providing initial calculations for angular velocity and acceleration. However, they express confusion about the next steps and the appropriate formulas to use, seeking guidance on how to proceed. The student specifically mentions trying the parallel axis theorem and kinetic energy equations without success. The request emphasizes a desire to master the process and receive clear advice on which formulas to apply next.
Hyburn
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hi folks, my back story is that I have failed my strength of materials and dynamics twice. the college I am attending put these courses in an accelerated time frame... this means 14 weeks of material turned into 7 weeks of material. I am not able to learn at that pace, hence why I failed twice.

I am not in these courses right now, but am trying to grasp the concepts so it doesn't happen again.

currently I am trying determine the force acting into a reciever when a slender rod with a mass of .033KG rotates 15degrees in 60 seconds and comes to a complete stop. the radius of rotation is .2542m

my calculations:
Omega=(theta)/t
=15/60
=.25 <<--------is this correct?

with this I can determine my angular acceleration:
(alpha)=dw/dt
=.25/60
=.0042 rad/s²

not sure what calculation to goto next. I have tried the parallel axis, I have tried the KE equation... not sure which path to take. this is where it gets REALLY FOGGY!

this is about as much as I picked up in class as the rest of this process is a complete blur... any help would be GREATLY appreciated.

-drew
 
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I want to master the process so please just advise me on what formula to use and which element I am solving for.

i.e.) use the parallel axis theorum to solve for Ig
 
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