Physics · 2020
JEE Main · 9 January 2020, Shift 1 · Q22
One end of a straight uniform 1 m long bar is pivoted on horizontal table. It is released from rest when it makes an angle 30° from the horizontal…
One end of a straight uniform $\displaystyle 1$ m long bar is pivoted on horizontal table. It is released from rest when it makes an angle $\displaystyle 30$° from the horizontal (see figure). Its angular speed when it hits the table is given as $\displaystyle \sqrt{\mathrm{n}} \mathrm{s}^{-1}$, where n is an integer. The value of n is \_\_\_\_.
Official answer
15
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