Starting from Rest,a Disk Rotates with Constant Angular Acceleration $\omega$ ,Then How Many Additional Revolutions Are Required to Reach an Takes

question 91

Multiple Choice

Starting from rest,a disk rotates with constant angular acceleration.If it takes 10 rev to reach an angular velocity $\omega$ ,then how many additional revolutions are required to reach an angular velocity 2 $\omega$ ?

• A)10 rev
• B)20 rev
• C)30 rev
• D)40 rev
• E)50 rev

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