Newton's Second Law (Pulley Sustem)

Click For Summary

Homework Help Overview

The discussion revolves around a physics problem involving Newton's Second Law applied to a pulley system with two masses, where one mass experiences kinetic friction while sliding horizontally. Participants are exploring the dynamics of the system and the relationships between forces acting on the masses.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to set up the problem by suggesting the use of free body diagrams (FBD) and Newton's laws of motion to derive equations for acceleration and tension. Some participants question the clarity of the figures provided and the format of the equations used in the discussion.

Discussion Status

The discussion is in an early stage, with participants providing feedback on posting practices and offering tips for using LaTeX for equations. There is no explicit consensus on the approach to solving the problem yet, but there is an indication of helpful guidance being shared.

Contextual Notes

Participants note preferences for clearer image formats and LaTeX usage for equations, suggesting that clarity in presentation may be important for further discussion.

armn91
Messages
2
Reaction score
1
Homework Statement
I am trying to find the solution to the following problem. Could you please let me know if what I have done is correct? Thank you.
Relevant Equations
Newton's Second Law
Two masses, M1=4.0 Kg, and M2=20 Kg, are attached by a rope that crosses over a massless, frictionless pulley. M1 slides horizontally and experiences a kinetic frictional force due to its motion across the surface. The coefficient of kinetic friction is uk = 0.638. When solving the problem, start drawing a FBD for each mass and writing appropriate N1L and N2L equations for each mass. Solve the system of equations for find the acceleration of the masses and the tension of the rope (see figure in document attached).
 

Attachments

  • IMG_0288.jpg
    IMG_0288.jpg
    50.3 KB · Views: 124
  • IMG_0289.jpg
    IMG_0289.jpg
    22.4 KB · Views: 132
Physics news on Phys.org
It looks correct to me. For future reference: After you upload a figure click "Insert" + Full image. Full images are easier to read than thumbnails. Also, for "work shown" we prefer equations in LaTeX to photos of handwritten notes. Click "LaTeX Guide", lower left, to learn how to do it.
 
Reply
  • Like
Likes   Reactions: berkeman and MatinSAR
Ok, thank you very much for your help!
 
Reply
  • Like
Likes   Reactions: berkeman
Welcome to PF.

I will send you some tips for posting equations using LaTeX. :smile:
 

Similar threads

System of two pulleys and three masses
  • · Replies 22 ·
Replies
22
Views
7K
Ideal Vs Real Mass Pulley system
  • · Replies 10 ·
Replies
10
Views
5K
Calculating acceleration of a prism and block connected to a wall through a rope and pulley
  • · Replies 4 ·
Replies
4
Views
903
3 pulley problem with attached masses
  • · Replies 15 ·
Replies
15
Views
6K
Olympiad dynamics problem with 3 masses and a pulley
  • · Replies 17 ·
Replies
17
Views
3K
Problem with pulleys - two fixed and one movable
  • · Replies 22 ·
Replies
22
Views
2K
Why body A has greater acceleration?
  • · Replies 13 ·
Replies
13
Views
1K
Pulley system problem: 6 Pulleys and 1 Mass
  • · Replies 5 ·
Replies
5
Views
1K
Newton's Third Law Problem: Two masses, a rope and a pulley
  • · Replies 21 ·
Replies
21
Views
10K
Falling mass, additionally accelerated by a rope
  • · Replies 18 ·
Replies
18
Views
1K