How to Solve a Friction and Tension Problem in Physics

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AI Thread Summary
The discussion centers around a challenging physics problem related to friction and tension that students struggled to solve during a quiz. The key equations mentioned include net force equals mass times acceleration and acceleration as velocity squared over distance. The student attempted to use free body diagrams and algebra but found no progress. They also noted that the problem attachment was inaccessible due to pending approval. The conversation highlights the need for collaborative problem-solving and resource sharing in tackling complex physics concepts.
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Homework Statement


The problem enclosed was given as a one problem quiz by my physics teacher. Out of both Honors classes, nobody got it, so he sent it home. I still have little to no idea on how to solve it.
View attachment phys prob 2.pdf

Homework Equations


net force=mass*acceleration
ac=(V^2)/d

The Attempt at a Solution


I drew the free body diagrams and tried to do some algebraic maneuvering but none of it got me anywhere. HELP...please
 
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he said we could use any resources that we found
 
The attachment is unaccessible by me... It says pending approval.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
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