Calculate Initial Angular Speed of Fan | High to Low Button Pushed

In summary, the angular speed of a fan refers to how fast the fan blades rotate around the central axis and is measured in revolutions per minute (RPM). It can be calculated by dividing the number of revolutions the fan makes in a given time period by the length of that time period. The angular speed does affect the cooling power of a fan, with faster rotation resulting in better cooling. The angular speed can typically be adjusted through different settings or controls, and the ideal speed may vary depending on the fan and its intended use. Generally, a higher angular speed can provide better cooling power, but it may also create more noise and use more energy.
  • #1
choole
6
0
An electric fan is running on HIGH. After fan has been running of 13.2 minutes, the LOW button is pushed. The fan slows down to 98 rad/sec in 1.83 seconds. The blades of the fan have a radius of 0.62 meters and their deceleration rate is 42.3 rad/sec2.

What was the initial angular speed of the fan in rev/sec?
 
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  • #2
--> Homework forum??
 
  • #3
look at the second omega and alpha... its only one step to the solution...

edit: does seem to belong there eh pete?
 

1. What is the angular speed of a fan?

The angular speed of a fan refers to how fast the fan blades rotate around the central axis. This is typically measured in revolutions per minute (RPM).

2. How is the angular speed of a fan calculated?

The angular speed of a fan can be calculated by dividing the number of revolutions the fan makes in a given time period by the length of that time period. For example, if a fan makes 10 revolutions in 1 minute, its angular speed would be 10 RPM.

3. Does the angular speed of a fan affect its cooling power?

Yes, the angular speed of a fan does affect its cooling power. Generally, the faster the fan rotates, the more air it can move and the better it can cool the surrounding area.

4. Can the angular speed of a fan be adjusted?

Yes, for most fans, the angular speed can be adjusted through different settings or controls. This allows for the fan to be used in different environments or for different purposes.

5. Is there an ideal angular speed for a fan?

The ideal angular speed for a fan may vary depending on the specific fan and its intended use. However, in general, a higher angular speed can provide better cooling power, but it may also create more noise and use more energy.

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