Problem 10.15 MasteringPhysics 9 of 24 Problem 10.15 An energy storage system ba

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Problem 10.15 MasteringPhysics 9 of 24 Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures.
Problem 10.15 MasteringPhysics 9 of 24 Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures.
Problem 10.15 MasteringPhysics 9 of 24 Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Problem 10.15 MasteringPhysics Problem 10.15 MasteringPhysics Problem 10.15 MasteringPhysics Problem 10.15 MasteringPhysics 9 of 24 Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Problem 10.15 Problem 10.15 An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.9 MJ when the flywheel is rotating at 12000 revolutions per minute. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures. Part A What is the moment of inertia of the flywheel? Express your answer using two significant figures.

Explanation / Answer

Angular K.E. = 1/2 I²
= 12e3 rev/min
= 12e3/6e1 = 200e3 rev/s
= (200)(2) = 31.84 rad/s

4.9e6 = (0.5)(I)(31.84)²
4.9e6 = (0.5)(I)(1013)
I = 3.7/1.23 = 9666.7 kg-m² ANS

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