Force AGAINST a pulley due to tension

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SUMMARY

The discussion focuses on calculating the net forces acting on a pulley due to tension in a line. The user initially struggled with understanding the reaction forces and their direction but ultimately realized that the correct approach involves using half the angle between segment BE and the horizontal to determine the reaction force. This insight clarifies how to analyze the forces acting on the pulley effectively.

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  • Understanding of basic mechanics and forces
  • Familiarity with tension in cables and pulleys
  • Knowledge of vector resolution in two dimensions
  • Basic trigonometry, specifically angle calculations
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  • Learn about vector decomposition and its applications in force analysis
  • Explore the mechanics of pulleys and their applications in engineering
  • Investigate the role of angles in determining forces in mechanical systems
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Mechanical engineers, physics students, and anyone involved in analyzing forces in pulley systems will benefit from this discussion.

ride5150
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heres the problem and its solution:

pulleyforce.jpg


I understand how to find reactions etc etc, the only thing that i don't understand is how to calculate the net forces that are acting on the pulley. the tension in the line is trying to "straighten" the line out, the pulley is fighting this force to keep the line "bent". how did they calculate the net forces acting on the pulley?

i thought the reaction force of the pulley was acting perpendicular to the segment "BE" but that didn't get me to the correct answer.

Thanks for your help
 
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nvmd i figured it out. its just the half the angle between BE and the horizontal.
 
Glad you were able to work it out.

FYI, I have moved this thread to the Engineering, Comp Sci, & Technology forum, since it is more appropriate there than in Advanced Physics.
 

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