/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q7P A loudspeaker produces a musical... [FREE SOLUTION] | 91影视

91影视

A loudspeaker produces a musical sound by means of the oscillation of a diaphragm whose amplitude is limited to1.00渭尘.

(a) At what frequency is the magnitudeof the diaphragm鈥檚 acceleration equal to g?

(b) For greater frequencies, isgreater than or less than g?

Short Answer

Expert verified

a) The frequency at which the magnitude of the acceleration is equal to g is 498.8 Hz

b) For greater frequencies a will be greater than g.

Step by step solution

01

The given data

The amplitude of the diaphragm,Xm=1渭尘or10-6m

02

Understanding the concept of motion

Maximum acceleration is a product of the square of angular frequency and amplitude. We can use this concept to find the frequency of a body in simple harmonic motion.

Formula:

Acceleration of body undergoing simple harmonic motion,

am=2Xm 鈥(颈)

Angular frequency of a body in oscillation,

=2f 鈥(颈颈)

03

(a) Calculation of frequency of body in oscillation

Using equation (i) and the given values, we get the angular frequency of body as:

a=2110-6

9.8m/s2=2110-6mgiven,a=g=9.8m/s2=3130.495rad/sec

Using equation (ii), the frequency of body is given as:

f=3132.495rad/sec2蟿蟿=498.5Hz

Hence, the frequency value is found to be 498.5 Hz

04

(b) Studying the effect of increase in frequency on acceleration

From equation (i)

a2

And f

So that,

af2

As acceleration is directly proportional to square of frequency, if we increase frequency then acceleration also increases and it will be greater than g

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

You are to build the oscillation transfer device shown in Fig.15-27. It consists of two spring鈥揵lock systems hanging from a flexible rod. When the spring of system is stretched and then released, the resulting SHM of system at frequency oscillates the rod. The rod then exerts a driving force on system 2, at the same frequency f1. You can choose from four springs with spring constants k of 1600,1500,1400, and 1200 N/m, and four blocks with masses m of 800,500,400, and 200 kg. Mentally determine which spring should go with which block in each of the two systems to maximize the amplitude of oscillations in system 2.

The vibration frequencies of atoms in solids at normal temperatures are of the order of1013Hz. Imagine the atoms to be connected to one another by springs. Suppose that a single silver atom in a solid vibrates with this frequency and that all the other atoms are at rest. Compute the effective spring constant. One mole of silver (6.021023atoms) has a mass of 108 g.

What is the phase constant for the harmonic oscillator with the position functionx(t)given in Figure if the position function has the formx=xmcos(蝇t+f)? The vertical axis scale is set byxm=6.0cm.

A 1000 kgcar carrying four82kgpeople travel over a 鈥渨ashboard鈥 dirt road with corrugations" width="9">4.0mapart. The car bounces with maximum amplitude when its speed is 16 km/h. When the car stops, and the people get out, by how much does the car body rise on its suspension?

A massless spring with spring constant 19 N/m hangs vertically. A body of mass 0.20 kgis attached to its free end and then released. Assume that the spring was unstretched before the body was released.

  1. How far below the initial position the body descends?
  2. Find frequency of the resulting SHM.
  3. Find amplitude of the resulting SHM.
See all solutions

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.