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Question

The moment of inertia of a fly-wheel is 4kg m2. A torque of 10 Newton-meter is applied on it. The angular acceleration produced will be :

A
25radians/sec2
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B
0.25radians/sec2
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C
2.5radians/sec2
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D
Zero
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Solution

The correct option is C 2.5radians/sec2
Using the relation τ=Iα we get α=104=2.5rad/s2

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