Question

PROBLEM1–A record player, or phonograph, is a device used to spin a vinyl disc upon which...

PROBLEM1–A record player, or phonograph, is a device used to spin a vinyl disc upon which sound waveforms are imprinted, and in this way, play music.Starting from rest, a particular record player achieves the constant angular speed at which music is played in 4.50 s with a constant angular acceleration of 0.7757rad/s2. The album Led Zeppelin IV is 42 minutes and 34 seconds in duration. After the entire album is played, the record player requires 8.00 s to come to a rest with constant angular acceleration. Suggested discussion board topic: Draw and compare the angular acceleration vs time, angular velocity vs time, and angular displacement vs time for the complete start-up, playing, and slow-down of the album.

a) What is the angular speed, in revolutions per minute, at which the record is played?

b) Find the total angular displacement, in revolutions, for the complete start-up, playing, and slow-down ofthe album.

Please Show work!

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A record player, or phonograph, is a device used to spin a vinyl disc upon which...
A record player, or phonograph, is a device used to spin a vinyl disc upon which sound waveforms are imprinted, and in this way, play music. Starting from rest, a particular record player achieves the constant angular speed at which music is played in 4.50 s with a constant angular acceleration of0.7757 rad/s2. The album Led Zeppelin IV is 42 minutes and 34 seconds in duration. After the entire album is played, the record player requires 8.00 s to come...
Two ladybugs land on a vinyl record of radius R = 15 cm which is initially...
Two ladybugs land on a vinyl record of radius R = 15 cm which is initially at rest. The first ladybug lands halfway from the center of the disc, while the other lands on its edge as shown below. The disc then begins to rotate, speeding up under a constant angular acceleration of 0.50 rad/s². After 2.0 revolutions, the record reaches its design speed and stops accelerating, continuing to rotate with a constant angular speed. a) What are the final...
Disc jockeys (DJs) use a turntable in applying their trade, often using their hand to speed...
Disc jockeys (DJs) use a turntable in applying their trade, often using their hand to speed up or slow down a disc record so as to produce a desired change in the sound. Suppose DJ Trick wants to slow down a record initially rotating clockwise (as viewed from above) with an angular speed of 32.1 rpm to an angular speed of 23.3 rpm. The record has a rotational inertia of 0.012 kg · m2 and a radius of 0.15 m....