NEET Sample Paper NEET Sample Test Paper-32

  • question_answer 21) A torque of SON m is acted on a 5kg wheel of moment of inertia \[2\text{ }kg\text{ }{{m}^{2}}\]for 10 second. Then the angle rotated by wheel in 10 second                     

    A)  750 rad

    B)  1500 rad               

    C)  3000 rad          

    D)  6000 rad

    Correct Answer: A

    Solution :

    \[\alpha =\frac{\tau }{I}=\frac{30}{2}=15rad/{{\sec }^{2}}\] Now \[\theta =0+\frac{1}{2}\alpha {{t}^{2}}\] \[=\frac{1}{2}\times 15\times {{(10)}^{2}}=750\,\,rad\]           

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