A thin bar of mass 
and length 
is free to rotate about a fixed horizontal axis through a point at its end. The bar is brought to a horizontal position ( 
0 ) and then released. The angular velocity when it reaches the lowest point is
Text Solution
Verified by ExpertsThe correct answer is:
B
Decrease in gravitational potential energy =
Increase in rotational kinetic energy about an axis passing through end point.
Angular velocity, 
or 
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