Assignment 6 Week 7
Due: 11:59pm on Friday, October 28, 2011
Note:
To understand how points are awarded, read your instructor's
Grading Policy
.
[
Switch to Standard Assignment View]
A Vibrating String
An oscillator creates periodic waves on a stretched string.
Part A
If the period of the oscillator doubles, what happens to the wavelength and wave speed?
Hint A.1
How to approach the problem
If you double the period of the oscillator, its frequency will change and therefore so will the
frequency of the wave on the string. You need to determine whether the wavelength and wave
speed vary with the frequency.
Hint A.2
Find the frequency
If you double the period of the oscillator, what happens to the frequency?
Hint A.2.1
Relation between frequency and period
Hint not displayed
ANSWER:
It is halved.
Correct
Hint A.3
Find the wave speed
If you double the period of the oscillator, what happens to the wave speed?
Hint A.3.1
Wave speed
Hint not displayed
ANSWER:
It is unchanged.
Correct
Hint A.4
Wavelength relation
The wavelength
of a periodic wave on a string is the distance between any two points in the
string at corresponding positions on successive repetitions in the wave shape. It depends on
MasteringPhysics: Assignment Print View
http://session.masteringphysics.com/myct/assignmentPrintVi...
1 of 8
11/24/11 11:32 AM
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
the speed
and frequency
of the wave according to the relation
.
ANSWER:
The wavelength is unchanged but the wave speed doubles.
This is the end of the preview.
Sign up
to
access the rest of the document.
 Winter '08
 BATES
 Physics, Assignment Print View

Click to edit the document details