Inclined Bar Translation: Understanding the Physical Meaning of Moments

  • Context: Graduate 
  • Thread starter Thread starter mkkeyan
  • Start date Start date
  • Tags Tags
    Inclined Translation
Click For Summary
SUMMARY

The discussion focuses on the translation of a homogenous slender bar with a mass of 4 kg and a length of 500 mm, pushed by a horizontal force of 60 N. The calculated angle of inclination θ is 33.4°, and the resulting acceleration is 15 m/s². A moment of 8.26 Nm about point A is also identified, raising questions about its physical implications and whether it would cause the rod to rotate about point A. The inquiry seeks clarification on the relationship between the moment and the translation of the bar.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with free body diagrams (FBD)
  • Knowledge of moments and torque in physics
  • Basic principles of dynamics and kinematics
NEXT STEPS
  • Study the concept of moments and their effects on rigid body motion
  • Explore the relationship between force, mass, and acceleration in translational motion
  • Learn about the conditions for equilibrium in rigid bodies
  • Investigate the implications of rotational dynamics on translational systems
USEFUL FOR

Students and professionals in physics, mechanical engineering, and dynamics who are analyzing the behavior of rigid bodies under applied forces and moments.

mkkeyan
Messages
9
Reaction score
0
I have a question on pure translation of inclined bar. The problem statement is:
A homogenous slender bar with a mass of 4 kg and a length of 500mm being pushed along the smooth horizontal surface by a horizontal force P=60N. Determine the angle θ for translation. What is the accompanying acceleration? (FBD and kinetic diagram attached)

I used the following equations:
⅀Fx=max
⅀Fy=0
⅀MG=0 (since rod is in translation)
The results
θ = 33.4°
a = 15m/s2
My question is, there exists a moment about point A equal to 8.26Nm. What is the physical meaning of this moment? Would not the rod rotate about A due to this moment? Requesting for help please.
 

Attachments

Physics news on Phys.org
If my question has already been discussed earlier, request some of you to give link to those threads.
Thanks in advance.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
Replies
1
Views
2K
  • · Replies 49 ·
2
Replies
49
Views
10K
  • · Replies 4 ·
Replies
4
Views
7K
Replies
7
Views
3K
Replies
5
Views
3K
Replies
2
Views
13K
Replies
3
Views
6K
Replies
4
Views
5K