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NEET Sample Paper NEET Sample Test Paper-6

  • question_answer
    A hoop rolls on a horizontal ground without slipping with linear speed V. Speed of a particle P on the circumference of the hoop at angle \[\theta \] with the vertical is:            

    A)  \[2V\,\sin \frac{\theta }{2}\]                   

    B)  \[V\,\sin \,\theta \]

    C)  \[2V\,\cos \,\frac{\theta }{2}\]                

    D)  \[V\,\cos \theta \]

    Correct Answer: A

    Solution :

    As, velocity of P \[{{V}_{P}}=\sqrt{{{V}^{2}}+{{V}^{2}}+2{{V}^{2}}\,\cos ({{180}^{o}}+\theta )}\] (Where, V= Velocity of centre at mass)             \[=V\sqrt{2(1-\cos \theta )}\] \[\Rightarrow \]               \[{{V}_{p}}=2V\sin \frac{\theta }{2}\]


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