Calculating Torque & Revs on 20kg Flywheel at 800 RPM in 40 secs

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In summary, torque is the rotational force applied to an object and is calculated by multiplying the force applied by the distance from the point of rotation. RPM is calculated by dividing the total number of revolutions by the time taken, and in the given scenario, the flywheel would have a speed of 800 RPM. The weight of a flywheel affects its rotational inertia, meaning a heavier flywheel would have a higher resistance to changes in speed. To complete 40 seconds at 800 RPM, the flywheel would take 32,000 seconds. The speed of the flywheel directly affects its torque, with a higher speed requiring a higher torque to maintain it.
  • #1
ME_mike
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a flywheel has a mass of 20kg and radius of gyration 95mm
what torque would be needed to accelerate it from rest to 800rev/min in 40seconds??
how many revelutions would it make during its process??
 
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  • #2
This can be found pretty easily on google, it also sounds like a textbook question.

What do you think is invloved in solving this?
 
  • #3
everything is given. what else do you need? Find I & accl.
torque = I.Accl
 

FAQ: Calculating Torque & Revs on 20kg Flywheel at 800 RPM in 40 secs

What is torque and how is it calculated?

Torque is a measure of the rotational force applied to an object. It is calculated by multiplying the force applied to the object by the distance from the point of rotation.

How do you calculate the revolutions per minute (RPM) of a flywheel?

RPM is calculated by dividing the total number of revolutions by the time it took to complete those revolutions. In this case, the RPM would be 800 revolutions per minute.

What is the significance of a 20kg flywheel?

The weight of the flywheel affects its rotational inertia, which is the resistance to changes in its rotational speed. A heavier flywheel will have a higher rotational inertia, meaning it will take more force to change its speed.

How long would it take for the flywheel to complete 40 seconds at 800 RPM?

To calculate this, we can use the formula Time = (Number of Revolutions / RPM) x 60 seconds. Plugging in the given values, we get Time = (800 rev / min) x (40 sec) / (1 min) = 32,000 seconds.

How does the speed of the flywheel affect its torque?

The torque of the flywheel is directly proportional to its speed. This means that as the speed of the flywheel increases, so does the torque required to maintain that speed. In this case, the flywheel would require a higher torque to maintain a speed of 800 RPM compared to a lower speed.

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