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Grade: 12th pass
        A string is wrapped around the rim of a wheel of moment of inertia of 0.2 kgm2 and radius 20 cm. The wheel is free to rotate about it`s axis and initially is at rest. The string is pulled by a force of 20N then angular velocity after 5 sec will be
2 years ago

Answers : (1)

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5 Points
							
Angular velocity after 5 sec is 100 rad/sec
I=0.2,r=0.2
T= moment of inertia ×angular acceleration
20×0.2=0.2×w/5
W=100 rad/sec
So angular velocity is 100 rad/sec
one year ago
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