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JEE Main & Advanced Sample Paper JEE Main Sample Paper-30

  • question_answer
    A uniform ring is rolling on an inclined plane having inclination\[{{30}^{o}}\]. Its acceleration will be \[(Take\,g=10\,\,m{{s}^{-2}})\]

    A)  \[10\,m{{s}^{-2}}\]                        

    B)  \[6.5\,m{{s}^{-2}}\]

    C)  \[2.5\,m{{s}^{-2}}\]          

    D) \[1\,m{{s}^{-2}}\]

    Correct Answer: C

    Solution :

    For the rolling object on inclined plane \[a=\frac{g\sin \theta }{1+\frac{I}{m{{r}^{2}}}}=\frac{g\sin 30{}^\circ }{1+1}=2.5\,m{{s}^{-2}}\]


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