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a flywheel of gasoline engine is required to give up 300 J of kinetic energy while its angular velocity decreases from 600 rev/min to 540 rev/min. What moment of inertia is required?


a flywheel of gasoline engine is required to give up 300 J of kinetic energy while its angular velocity decreases from 600 rev/min to 540 rev/min. What moment of inertia is required?


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1 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

Dear cathy

E  =1/2 Iw12  - 1/2 Iw22

  =I/2 [w12  - w22]

300 = I/2 [ w12  - w22]

 

w1 = 2*∏*600 /60 = 20∏ rad/sec

w2 = 2*∏*540 /60 = 18∏ rad/sec

 

put the value of w1 and w2 and calculate the value of moment of Inertia

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