0
Constant angular velocity of a rotating disk means that, given a stationary base reference line and a zero line on the disk, both extending from the center of rotation to the outside edge of the disk, the periodic change in angle between the two lines remains a constant. Such a disk will have constant angular velocity (CAV) if its rate of rotation or revolutions per minute (RPM) remains constant.
While it would be technically possible to have the linear velocity of the disk remain constant by gradually decreasing the speed of rotation as the player head moves across the disk (because the outer paths are longer than the inner ones), this would make things more complicated both for the recording and playback machines, and therefore more expensive.
The paths of information on a CD (or DVD) are analogous to the grooves on an LP recording. The recording and playback heads move across the disk (CD or LP) as it rotates. Actually, of course, there is only one spiral path or groove; on an LP, it goes from the outside edge toward the center; on a CD/DVD, it goes in the opposite direction. In deciding on the parameters for the LP and CD, engineers had to involve the amount of data to be recorded and the spacing required to record that data versus the size of the disk, the speed of rotation, the data capacity of the disk material, and the sensitivity of both the recording and playback heads.
The result of this engineering was set as the standard for recording audio LP's and CD's and, later, DVD's.
Add your answer:
Earn +20 pts
What is the meaning of the word accelerating?
ACCELERATING : increasing in speed or velocity, or (analogous use) a trend that increases more rapidly e.g. "The deforestation of Brazil may be accelerating." (applies to the rate of deforestation)
Is this how you spell applies?
Yes, applies is the correct spelling.Some example sentences are:She applies to the local university.The same rule applies to you as well, Benjamin.The doctor applies a bandage to my wound.
What is the collective noun for battery?
No, the standard collective nouns for ducks are:a brace of ducks (applies to birds, in general)a flock of ducks (applies to birds on the ground, in general)a flight of ducks (applies to birds in the air, in general)a badelynge or badling of ducks (applies to ducks on the ground)a paddling of ducks (applies to ducks in the water)a raft of ducks (applies to ducks in the water)a team of ducks (applies to ducks in the water)a flush of ducksThe noun 'battery' is used as a collective noun for:a battery of barracudasa battery of testsa battery of guns.
How do you spell field?
The word "field" applies to open land, and the verb "to field" applies to sports teams or activities.
How do you pronounce applique?
applique is pronounced applies in english.
Define constant angular velocity and explain how it is applies to a CD?
Angular velocity is the measure of angular displacement (in one or the opposite) direction over a unit period of time. In the context of CDs , one unit in which this can be measured is the number of revolutions per second. A constant angular velocity means that the CD is turning through the same angle each second.
How does constant linear velocity and explain how it applies to CD standards?
Constant linear velocity (CLV) means that the disc rotates at a constant speed regardless of where you are on the disc. This is important for CDs because it ensures a consistent data transfer rate, allowing for smooth playback and accurate reading of data. CLV helps to optimize the performance of the CD drive and improve overall user experience with minimal errors or interruptions during playback.
Law of the conservation of angular momentum applies which body?
Law of conservation of momentum applies to any body on which no external torque is acting.
How can an object moving at a constant speed have a nonzero acceleration?
Let's review some terms before we tackle this one. Speed is displacement per unit of time. We know 60 miles per hour is a speed. Velocity is speed with a direction vector associated with it. We know 60 miles per hour east is velocity. Acceleration is a change in velocity. That means if an object changes its speed or its direction or both, it is accelerating.If an object has a given velocity and it slows down or speeds up, it is accelerated. But if the same object changes direction without a change in speed, it is still experiencing acceleration. A force had to act on the object to change its direction, even though its speed didn't change. Thus, an object can accelerate even though it does not change speed.
Does the law of inertia apply to moving or non moving objects?
The law of inertia applies to both moving and non-moving objects. It states that an object will remain at rest or continue moving at a constant velocity unless acted upon by an external force.
What is the equations of linear motion apply only if system acceleration?
The equation of linear motion that applies when the system's acceleration is constant is: [s = ut + \frac{1}{2}at^2] Where: (s) is the displacement of the object, (u) is the initial velocity of the object, (a) is the constant acceleration of the object, and (t) is the time elapsed.
What factor changes the velocity of an object?
The main factors that can change the velocity of an object are forces acting upon it, such as acceleration or deceleration forces. Other factors may include the object's mass and the direction of the applied force.
Newton's second law for rotational motion?
Newton's second law for rotational motion states that the net torque acting on an object is equal to the product of the object's moment of inertia and its angular acceleration, similar to how force is related to acceleration in linear motion. Mathematically, this can be written as τ = Iα, where τ represents torque, I is the moment of inertia, and α is the angular acceleration.
In which situation does the law of conservation of momentum apply a. in the absence of greatest velocity c. in the absence of outside forces b in the presence of least velocity d. in the presence of o?
c. The law of conservation of momentum applies in the absence of outside forces. This means that if the net external force acting on a system is zero, the total momentum of the system remains constant.
Define constant linear velocity and explain how it applies to CD standards?
Constant angular velocity of a rotating disk means that, given a stationary base reference line and a zero line on the disk, both extending from the center of rotation to the outside edge of the disk, the periodic change in angle between the two lines remains a constant. Such a disk will have constant angular velocity (CAV) if its rate of rotation or revolutions per minute (RPM) remains constant.While it would be technically possible to have the linear velocity of the disk remain constant by gradually decreasing the speed of rotation as the player head moves across the disk (because the outer paths are longer than the inner ones), this would make things more complicated both for the recording and playback machines, and therefore more expensive.The paths of information on a CD (or DVD) are analogous to the grooves on an LP recording. The recording and playback heads move across the disk (CD or LP) as it rotates. Actually, of course, there is only one spiral path or groove; on an LP, it goes from the outside edge toward the center; on a CD/DVD, it goes in the opposite direction. In deciding on the parameters for the LP and CD, engineers had to involve the amount of data to be recorded and the spacing required to record that data versus the size of the disk, the speed of rotation, the data capacity of the disk material, and the sensitivity of both the recording and playback heads. ---- The above answer defines Constant Angular Velocity (CAV), not Constant Linear Velocity. The following is the definition to Constant Linear Velocity (CLV): "Constant Linear Velocity (CLV) is a CD-ROM (Compact Disc - Read Only Memory) format in which the spacing of data is consistent on the CD, but the speed of the disc varies on whether the data being read is near the cent or the edge of the disc." During CLV, in order to create the effect of constant speed as the CD turns, the CD drive uses a mechanism that slows down the disc when the laser beam is near the center of the disc, and speeds up the disc when the laser beam is near the outer edge. Thus, the beam is over a sector for the same amount of time, no matter where the sector is.
An objects resistance to change in motion?
Inertia. Inertia applies to both increases and decreases in velocity.
Does the law of inertia apply to moving and non moving objects?
Yes, the law of inertia applies to both moving and non-moving objects. This law states that an object will remain at rest or continue moving at a constant velocity unless acted upon by an external force.
