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JIPMER Jipmer Medical Solved Paper-2009

  • question_answer
    A wheel has angular acceleration of \[3.0\text{ }rad\text{/}{{s}^{2}}\]and an initial angular speed of 2.00 rad/s. In a time of 2 s it has rotated through an angle (in radian) of

    A)  6                            

    B)         10                         

    C)  12                         

    D)         4

    Correct Answer: B

    Solution :

    \[\theta ={{\omega }_{0}}t+\frac{1}{2}\alpha \,{{t}^{2}}\] Given, \[\alpha =3.0\,rad\text{/}{{s}^{2}},\]\[{{\omega }_{0}}=2.0\,rad\text{/}s,\]\[t=2\,s.\] Hence,   \[\theta =2\times 2+\frac{1}{2}\times 3\times {{(2)}^{2}}\] or            \[\theta =4+6=10\,rad\]


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