Finding Tension in a Piano Wire Wrapped Around a Tuning Peg

Thread starter jmccray
Start date Jun 2, 2006
Tags

Piano Tension Tuning Wire

AI Thread Summary

To find the tension in a piano wire wrapped around a tuning peg after two revolutions, the wire's modulus of elasticity (Y = 2.0 x 10^10 N/m^2), radius (0.80 mm), and length (0.76 m) are crucial. The radius of the tuning peg (1.8 mm) affects the amount of wire wrapped and thus the tension generated. When the peg is turned, the wire experiences a torque that leads to tension, which can be calculated using the relationship between torque, radius, and the modulus of elasticity. The problem requires showing work to clarify the calculations involved in determining the tension. Understanding these principles is essential for solving the tension problem accurately.

Jun 2, 2006

jmccray

A piano wire (Y=2.0*10^10 N/m^2) has a radius of 0.80 mm and a length of 0.76 m. One end of the wire is wrapped around a tuning peg whose radius is 1.8 mm. The other end is fixed in place. Initially, there is no tension in the wire. Find the tension when the peg is turned through 2 revolutions.

Physics news on Phys.org

Jun 2, 2006

siddharth

Homework Helper

Gold Member

What are your thoughts/ideas on this problem? You need to show your work to get help.

Thread 'I've come across another fluid pressure problem I don't understand'

Neglect gravity other than that of water; neglect friction. F1=ρgsh=1000*10*1*(1+4)=50000 N; F1=ρgsh=1000*10*0.1*4=4000 N; F3=50000-4000=46000 N?

View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...

View full post »

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .

View full post »