Find the acceleration of the system and the maximum force

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Homework Help Overview

The discussion revolves around a physics problem involving three connected masses and the forces acting on them. The participants are tasked with finding the acceleration of the system and determining the maximum force that can be applied without breaking the rope.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the relationship between tension and acceleration, with one member attempting to calculate acceleration using the tension between two masses. Questions arise regarding the approach to finding the maximum force and the implications of increasing this force on the system.

Discussion Status

The conversation is ongoing, with some participants providing insights into the first part of the problem while seeking further assistance for the second part. There is an indication of productive guidance being offered, particularly in suggesting a diagram to visualize the problem.

Contextual Notes

Participants are navigating the constraints of the problem, including the given tensions and the need to determine which segment of the rope is most likely to fail under increased force. There is a focus on understanding the dynamics of the system without providing direct solutions.

annalian
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Homework Statement


There are 3 masses ma= 50 kg, mb= 60kg, mc= 80kg. These masses are connected with a rope that affords a tension of 1000 N. On the mass 3 is applied a force F. Knowing that the tension between A and B TAB= 200 N. a)Find the acceleration b) find the maximal value of the force F so that the rope doesn't cut off. a) [4m/s2] b) [1727N]

Homework Equations


F=m*a

The Attempt at a Solution


TAB= ma*a => a=TAB/ ma
 
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annalian said:
TAB= ma*a => a=TAB/ ma
That's good. What about part b?
 
Doc Al said:
That's good. What about part b?
I don't know... Could you help?
 
annalian said:
I don't know... Could you help?
It's actually quite similar to part a. Draw yourself a diagram. Hint: Which segment of rope would break first, if the force is increased too much?
 

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