JEE Main & Advanced Physics Rotational Motion JEE PYQ-Rotational Motion

  • question_answer
    A rod of length 50 cm is pivoted at one end. It is raised such that if makes an angle of \[30{}^\circ \]from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal (in rad \[{{s}^{-1}}\]) will be (\[g=10\text{ }m{{s}^{-2}}\])                                                                           [JEE Main 09-Jan-2019 Evening]

    A)   \[\sqrt{\frac{30}{2}}\] 

    B)        \[\frac{\sqrt{20}}{3}\]

    C)   \[\frac{\sqrt{30}}{2}\] 

    D)        \[\sqrt{30}\]

    Correct Answer: D

    Solution :

    [d]   


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