Moment Of Inertia Of A Flywheel
Moment of inertia of a flywheel
Jonathan Prevett 13/11/14
Uday Ravish
Aim:
To determine the moment of inertia of a flywheel.
Apparatus:
Fly wheel and axel, weight hanger, slotted weights, stop watch, metre ruler.
Definitions:
Moment of Inertia- a quantity expressing a body's tendency to resist angular acceleration
Radius of Gyration- the distribution of the components of an object around an axis.
Method:
The weights were suspended from the axel by the cord, then we used a meter ruler to make sure it was 1m above the ground. The same person who is holding the weights has a stopwatch so they release the weights and start the stopwatch at the same time. They stop the stopwatch when the weights hit the floor. We repeated this for 4 different weights with both flywheels.
I=0.026 I=0.0095
Example Calculations:
Volume of section 1: L =
Angular Acceleration-
Radius of Gyration for axel: Torque=mgh
Moment of Inertia: +m2k2+m3k3 = 0.0245kgm²
For Aluminium,
Applications:
The very first known application of a flywheel is in a potter’s wheel to keep it spinning at a constant rate. Most promising as a direct alternative to chemical batteries in cases where uninterrupted direct current power is required. They have higher power density and are easier on the environment and also easier to maintain. Low speed flywheels can be used for emergency backup power sources because they can deliver a large amount of power for a short period of time.
Conclusion/Discussion: From the results that we have collected it is clear to see that the Steel flywheel has a much larger moment of inertia than its Aluminium counterpart due to its higher density and therefore increased mass. The raw data we have collected may not be 100% accurate mostly down to human error with the timings but also the slight uncertainty over the real valued of the slotted masses. The difference between the theoretical and experimental
Jonathan Prevett 13/11/14
Uday Ravish
Aim:
To determine the moment of inertia of a flywheel.
Apparatus:
Fly wheel and axel, weight hanger, slotted weights, stop watch, metre ruler.
Definitions:
Moment of Inertia- a quantity expressing a body's tendency to resist angular acceleration
Radius of Gyration- the distribution of the components of an object around an axis.
Method:
The weights were suspended from the axel by the cord, then we used a meter ruler to make sure it was 1m above the ground. The same person who is holding the weights has a stopwatch so they release the weights and start the stopwatch at the same time. They stop the stopwatch when the weights hit the floor. We repeated this for 4 different weights with both flywheels.
I=0.026 I=0.0095
Example Calculations:
Volume of section 1: L =
Angular Acceleration-
Radius of Gyration for axel: Torque=mgh
Moment of Inertia: +m2k2+m3k3 = 0.0245kgm²
For Aluminium,
Applications:
The very first known application of a flywheel is in a potter’s wheel to keep it spinning at a constant rate. Most promising as a direct alternative to chemical batteries in cases where uninterrupted direct current power is required. They have higher power density and are easier on the environment and also easier to maintain. Low speed flywheels can be used for emergency backup power sources because they can deliver a large amount of power for a short period of time.
Conclusion/Discussion: From the results that we have collected it is clear to see that the Steel flywheel has a much larger moment of inertia than its Aluminium counterpart due to its higher density and therefore increased mass. The raw data we have collected may not be 100% accurate mostly down to human error with the timings but also the slight uncertainty over the real valued of the slotted masses. The difference between the theoretical and experimental