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NEET Sample Paper NEET Sample Test Paper-24

  • question_answer
    A constant torque of 1000 N-m turns a wheel of moment of inertia\[200\,kg-{{m}^{2}}\] about an axis through its centre. Its angular velocity after 3 seconds is

    A)  1 rad/s                         

    B)  5 rad/s

    C)  10 rad/s                       

    D)  15 rad/s

    Correct Answer: D

    Solution :

     \[\tau =1000\,N-m,\,I=200\,kg-{{m}^{2}}\] \[\therefore \]\[I\alpha =1000\]             \[\Rightarrow \]   \[\alpha =\frac{1000}{200}=5rad/se{{c}^{2}}\]             \[\omega ={{\omega }_{0}}+\alpha t=0+3\times 5=15\,rad/s\]


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