Statics (smooth pin reaction + tension)

Click For Summary
SUMMARY

This discussion focuses on solving a statics problem involving tensions in a system with a smooth pulley. The key equations used are the equilibrium equations: \(\sum F_{x} = 0\), \(\sum F_{y} = 0\), and \(\sum M = 0\). The user questions whether tensions A and B are equal due to their different angles, concluding that while tensions vary in magnitude, they remain constant along a single cable segment. The discussion emphasizes the importance of resolving forces and moments to find the tension in the cable.

PREREQUISITES
  • Understanding of static equilibrium principles
  • Familiarity with vector resolution of forces
  • Knowledge of tension in cables and pulleys
  • Ability to apply trigonometric functions in physics problems
NEXT STEPS
  • Study the method of resolving forces in static systems
  • Learn about the properties of smooth pulleys in mechanics
  • Explore the concept of tension in multi-segment cables
  • Practice solving problems using the equilibrium equations in statics
USEFUL FOR

Students studying physics, particularly those focusing on statics, mechanical engineers, and anyone involved in solving tension-related problems in mechanical systems.

jegues
Messages
1,085
Reaction score
3

Homework Statement


See figure.


Homework Equations


\sum F_{x} = 0
\sum F_{y} = 0
\sum M = 0

The Attempt at a Solution


See figure (written in my writing).

Are the tensions A and B suppose to be the same? I imagine not because they are at different angles so they have different magnitudes but at the same time tension should be constant over the smooth pulley.

I'm having trouble solving the tension in ADB.

Any ideas?
 

Attachments

  • TensionReaction.JPG
    TensionReaction.JPG
    26.2 KB · Views: 765
Last edited:
Physics news on Phys.org
In a single cable different segments must have the tension.
So
T*sinθ1*x1 + Τ*sinθ2*x2 = F*x3.
Now solve for T.
The reaction on the pin is ΣTx.
 

Similar threads

Replies
19
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 18 ·
Replies
18
Views
2K
  • · Replies 8 ·
Replies
8
Views
7K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 6 ·
Replies
6
Views
4K