Calculating Tension in Cables for 17.0 kg Speaker

  • Thread starter Thread starter kappcity06
  • Start date Start date
  • Tags Tags
    Tension
Click For Summary
SUMMARY

The discussion focuses on calculating the tension in cables supporting a 17.0 kg loudspeaker suspended 1.80 m below the ceiling using two cables of length 3.30 m. The tension forces are analyzed by breaking them into horizontal and vertical components, where the horizontal components cancel each other out. The vertical components must equal the weight of the speaker, leading to the conclusion that the tension in each cable can be derived from the relationship between the angles formed by the cables and the ceiling.

PREREQUISITES
  • Understanding of basic physics concepts, specifically forces and tension.
  • Knowledge of trigonometry, particularly sine and cosine functions.
  • Familiarity with vector decomposition in physics.
  • Ability to solve equations involving angles and forces.
NEXT STEPS
  • Calculate the exact tension in the cables using trigonometric identities.
  • Explore the concept of static equilibrium in physics.
  • Learn about vector resolution and its applications in force analysis.
  • Investigate the implications of different angles on tension in cable systems.
USEFUL FOR

Physics students, engineering students, and professionals involved in structural analysis or mechanics who need to understand the principles of tension in cable systems.

kappcity06
Messages
90
Reaction score
0
A loudspeaker of mass 17.0 kg is suspended a distance of h = 1.80 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30 m.

What is the tension in each of the cables?

Tried mg sintheta^2+mgcostheat^2=c^2 but no dice.

Anyone know anything?

thanks
 
Physics news on Phys.org
The tension forces point along the wires. Call their magnitude T and split them into horizontal and vertical components. The horizontal components cancel and the sum of the vertical components should cancel the mg force on the speaker.
 
The two (similar in magnitude tensions) and the weight form a triangle. If theta is the angle between the cables and the ceiling then the angle between the two tension vectors in the triangle is two times theta.
 

Similar threads

Replies
13
Views
2K
  • · Replies 19 ·
Replies
19
Views
3K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 19 ·
Replies
19
Views
4K
Replies
8
Views
1K
  • · Replies 10 ·
Replies
10
Views
6K
  • · Replies 63 ·
3
Replies
63
Views
5K
Replies
2
Views
6K
  • · Replies 6 ·
Replies
6
Views
10K
  • · Replies 31 ·
2
Replies
31
Views
5K