Solving Forces and Acceleration for a System of Masses

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Homework Help Overview

The discussion revolves around a physics problem involving forces and acceleration in a system of masses. Participants are tasked with calculating acceleration and tension forces in a rope connecting two masses, while considering various assumptions such as negligible friction and the mass of the rope.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are attempting to calculate acceleration and the forces exerted on the masses by the rope. Questions include the direction of acceleration and the equality of tension forces. Some participants are also sharing their calculations and seeking verification.

Discussion Status

The discussion is active, with participants sharing their calculations and seeking assistance. Some have proposed specific values for the masses and forces, while others express confusion and request help in understanding the problem. There is no explicit consensus on the answers yet.

Contextual Notes

Participants are working under the assumption that certain forces and masses are defined, but there may be missing information or misunderstandings regarding the setup of the problem. The original poster indicates they will share their attempted solution for feedback.

Faiza
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In this problem (open the attachment to see the picture):

*We assume F_1 is less than F_2
*We assume that friction is negligible
*We assume that the rope has a mass m_r not equal to zero

Q1.What is the acceleration? Choose a coordinate system and include the
direction of the acceleration in your answer.

Q2.What is the force exerted on mass 1 by the rope, T_1?
Q3.What is the force exerted on mass 2 by the rope, T_2?
Q4.Are your asnwers to 2 and 3 equal in magnitude? Why?
Q5.Now assume that M_1=12 kg
M_2=5 kg
F_1=5 N
F_2=15 N
M_r= 2 kg
Repeat your answers to parts 1, 2 and 3 using these values.

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I'm going to post up my wrong asnwer someone please check it after
 

Attachments

Physics news on Phys.org
any one?/
 
Please post what you've done, and we'll check it for you.
 
Do you get 0.526 m/s^2, 12.37 N and 11.32 N ?
 
would the acceleration be a= F / m1 + m2
 
F12(the force exerted on by m1 on m2) = (m2/m1+m2) *F
 
can someone please help me figure this out ?
 
i realll need hellp omg this is so hard for me
 
help i still didnt get the same answer
 
  • #10
i really need help now
 

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