# How does a record player relate to physics?

Vinyl record players are electromagnetic devices that change sound vibrations into electrical signals. When a record spins, it creates sound vibrations that get converted into electrical signals.

## What provides the centripetal force in a turntable?

There is tension in the string. The string pulls on the mass with a force F directed towards the center of the circle. This force F is responsible for the centripetal acceleration, F = mv2/r.

## How does increasing the mass of the turntable affect its angular velocity?

If the rotational inertia, I, increases by moving the mass away from the axis or rotation, then the angular velocity, ω, will decrease.

## What is Mv2 R?

For a mass M with tangential speed v at radius R, the centripetal force is Fc = Mv2/R.

## How does a record player work?

How do record players work? A stylus touches the top of the record and rides around the disk. It picks up vibrations that are then sent to a cartridge, which then converts them into electrical signals. These signals are sent to an amplifier which converts the signals back to sound through speakers.

## How does a record record sound?

A stylus on the record player moves through the grooves imprinted on the disc and “reads” them. This reading generates an electric signal which is transferred to an amplifier. The amplifier ultimately conducts the signal to the speakers, from where it will come out as sound.

## Why is static friction used in circular motion?

As you negotiate a turn, if you are turning left, your wheels are pushing to the right against the floor. Static friction allows the floor to “push back” against your wheels, allowing you to turn left. In this case the only force that is acting in the direction of turn(centripetal force) is the frictional force.

## What forces cause centripetal acceleration?

Centripetal forces cause centripetal accelerations. In the special case of the Earth’s circular motion around the Sun – or any satellite’s circular motion around any celestial body – the centripetal force causing the motion is the result of the gravitational attraction between them.

## How does static friction provides centripetal acceleration?

The static friction between tyre & the road will provide the centripetal force to balance the centrifugal force (mrω2) only when a car takes a turn or moves on a circular or curved path. This centripetal force prevents the wheels from sliding in lateral direction on the road.

## Does mass affect rotational speed?

Indeed, the rotational inertia of an object depends on its mass. It also depends on the distribution of that mass relative to the axis of rotation. When a mass moves further from the axis of rotation it becomes increasingly more difficult to change the rotational velocity of the system.

## Where the mass is located has an effect on a rotating object?

Rotational mass depends upon the mass and how the mass is distributed. Rotational mass will be greater if the mass is farther from the axis of rotation and it will be less if the mass is closer to the axis of rotation. Masses close to the axis of rotation have a small rotational mass.

## Does the angular velocity of the merry go round increase/decrease or remain the same?

As when the child walks from the outer edge of a rotating merry-go-round to the center of rotation, then the angular velocity of the merry-go-round will increases because of the conservation of the angular momentum when the child walks towards inside then the moment of inertia decreases as the distance decreases.

## What is Omega formula?

ω = 2 π T = 2 π f. SI unit.

## What formula is F MV?

Impulse-Momentum Formula F = applied force. Δt = change in time. m = mass. Δv = change in velocity.

## What does 1/2 mv2 stand for?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

## How do record players work without electricity?

The only players that don’t require electricity are hand crank players and those use a “horn” for the sound to come out and not speakers. Even all of the old record players require electricity to run! A record player needs electricity for the platter to rotate.

## Why do vinyls sound better?

Because of record grooves, the sound of vinyl is more open, allowing a greater quantity of features to be heard. The space afforded by the grooves allows one to locate and individuate particular instruments and sounds and observe how they contribute to the music as a whole. This way, diversity can be heard.

## How does a record player spin?

Models like the Audio Technica-LP60X operate via a belt drive located underneath the turntables platter. This belt is is looped around a pulley, connecting to a drive motor that allows the turntable to spin. Other belt-driven models, like the Marantz TT-15S1, contain the same system—but the belt is external.

## How long do vinyl records last?

Your vinyl records can last anywhere from a year or two and up to well over 100 years. If you’re aiming for the latter, it really comes down to how well you care for your record collection.

## Can you touch vinyl records?

Only hold the vinyl record at its outer edges, thereby avoiding the possibility of your body oils transferring onto the vinyl’s surface. If you touch the record’s surface, you increase the risk of getting dirt on the record and damaging it unnecessarily.

## How long can a vinyl record be?

Gorgeous full-length vinyl records on 150 and 180 gram At 33 rpm they hold around 15-22 minutes per side. 33 rpm is the most common speed for 12 inch records. Over 22 minutes per side is possible, but may require further adjustments to EQ and/or levels for it all to fit nicely and sound great.

## Is dynamic friction and kinetic friction the same?

Kinetic friction (also referred to as dynamic friction) is the force that resists the relative movement of the surfaces once they’re in motion.

## Why centripetal force is equal to friction?

The frictional force supplies the centripetal force and is numerically equal to it. Centripetal force is perpendicular to velocity and causes uniform circular motion. The larger the Fc, the smaller the radius of curvature r and the sharper the curve.

## What are 3 examples of centripetal force?

• Centripetal vs Centrifugal Force. The main difference between centripetal force and centrifugal force is that only the former can truly be described as a “force.”
• A Merry-go-round.
• The Gravitron.
• Tetherball.
• A Porch Swing.
• Turning in a car.
• Planet Earth.
• Discus Throw.