Register to reply

How do you determine the amplitude of a wave exhibiting simple harmonic motion?

Share this thread:
BrendanC
#1
Apr17-09, 08:25 AM
P: 1
When a string, fixed at both ends, has a force exerted on it, how do you determine what the amplitude will be, if the tension, applied force, and length are known?
Phys.Org News Partner Physics news on Phys.org
Physicists discuss quantum pigeonhole principle
First in-situ images of void collapse in explosives
The first supercomputer simulations of 'spin?orbit' forces between neutrons and protons in an atomic nucleus
quantoshake11
#2
Apr18-09, 02:40 PM
P: 40
i have no idea, but clear this up for me, is the string resonating on these frequencies? i think so, and if it is, the amplitud ought to diverge, am i right? i've thought about this for a while, for i needed to measure these frequencies on the lab and i wanted to know where to put the oscillator so it would all move as smooth as it could.
staticd
#3
Sep1-09, 10:31 PM
P: 60
How is the force acting on the string? Is it a pulse?

If so the amplitude of the anti-node of the string is a function of the intensity displacement. In other words, if the string has a tension on it (some mass) and then you vibrate the string, the amplitude of the vibrator will determine the amplitude at the resonant frequency. In my experience that's around 60 Hz with a 20 Hz step bandwidth to the next resonant frequency.


Register to reply

Related Discussions
Finding the Amplitude of a spring (Simple Harmonic Motion) Introductory Physics Homework 7
Simple Harmonic Motion and Wave Motion General Physics 2
Finding Amplitude-simple harmonic motion Introductory Physics Homework 8
Simple Harmonic Motion/Wave Motion Introductory Physics Homework 2
Simple Harmonic Wave Introductory Physics Homework 1