How Many Revolutions Does a Centrifuge Make in 240 Seconds?

In summary, a centrifuge revolution is the rotational motion of a centrifuge used to separate substances of different densities. It works by utilizing centrifugal force to separate denser particles from less dense ones. There are two main types of centrifuge revolutions: preparative and analytical. They have various applications in fields such as biotechnology, chemistry, and medicine. Proper safety precautions, such as wearing protective equipment and maintaining the machine, should be followed when using a centrifuge revolution.
  • #1
physicsma1391
19
0
[SOLVED] Centrifuge Revolutions?

Homework Statement



A centrifuge accelerate from rest to 15,000 rpm in 240s. Through how many revolutions did it turn in this time?

Homework Equations



am i approaching this problem correctly?

The Attempt at a Solution



15000rev/m (1m/60s) (240s) = 60000 rev
 
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  • #2
It is accelerating though. What you have calculated is for a constant angular velocity. What is the definition of angular acceleration? If you know that equation you can solve this problem. Don't forget to convert into radians where necessary.
 
  • #3


Your approach is correct. To find the number of revolutions, you need to use the formula:

Revolutions = (angular velocity x time) / 2π

In this case, the angular velocity is given in rpm, so you need to convert it to radians per second by multiplying by 2π/60.

Revolutions = (15000 rpm x 2π/60) x 240s / 2π = 60000 rev.

Therefore, the centrifuge made 60000 revolutions in 240 seconds. This is a high number, which shows the rapid acceleration of the centrifuge.
 

FAQ: How Many Revolutions Does a Centrifuge Make in 240 Seconds?

1. What is a centrifuge revolution?

A centrifuge revolution refers to the rotational motion of a centrifuge, which is a machine used to separate substances of different densities. It involves spinning a sample at high speeds in order to create centrifugal force, which causes the heavier components to settle at the bottom and the lighter components to rise to the top.

2. How does a centrifuge revolution work?

A centrifuge revolution works by utilizing the principle of centrifugal force. The sample is placed in a rotor, which is then spun at high speeds. This spinning motion creates a centrifugal force that pulls the denser particles towards the outer edges of the rotor, while the less dense particles remain closer to the center. This separation allows for the isolation and purification of the desired components.

3. What are the different types of centrifuge revolutions?

There are two main types of centrifuge revolutions: preparative and analytical. Preparative centrifuges are used for large-scale separations and can handle larger volumes of samples. Analytical centrifuges, on the other hand, are used for smaller scale separations and are more precise in their measurements.

4. What are some common applications of centrifuge revolutions?

Centrifuge revolutions have a wide range of applications in various fields, including biotechnology, chemistry, and medicine. They are commonly used for separating blood components, isolating DNA and RNA, purifying proteins, and analyzing samples in research and diagnostic labs.

5. What are the safety precautions for using a centrifuge revolution?

As with any laboratory equipment, it is important to follow proper safety precautions when using a centrifuge revolution. This includes wearing appropriate personal protective equipment, such as gloves and safety glasses, using the machine according to its instructions, and properly balancing the sample in the rotor to prevent accidents. It is also important to regularly maintain and inspect the centrifuge to ensure safe operation.

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