One end of a straight uniform 1m long bar is pivoted on a horizontal table. It is released from rest when it makes an angle 30o from the horizontal (see figure). Its angular speed when it hits the table is given as , where n is an integer. The value of n is __________.
Option: 1 15
Option: 2 12
Option: 3 24
Option: 4 30
Solving
Since, , Therefore n= 15.
Hence the correct option is (1).
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