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a rod of length L is hinged from one end. It is brought to a horizontal position and released. The angular velocity of the rod when it is in vertical position is a) sqrt(sg/l) b) sgrt(3g/l) c) sqrt (g/2l) d) sqrt(g/l)

a rod of length L is hinged from one end. It is brought to a horizontal position and released. The angular velocity of the rod when it is in vertical position is


a)   sqrt(sg/l)


b)  sgrt(3g/l)


c)   sqrt (g/2l)


d)  sqrt(g/l)

Grade:11

1 Answers

Srichandra Chilappagari
5 Points
10 years ago

hi sharma,

                 u consider motion of center of mass of rod.

 it has come down by L/2 height.intially rod was at rest.

                                incriment in grav.P.e=gain in K.E

                            mgl/2=   1/2 x (ml2)/3 x w2

solving u gt b as ans


 

 deeksha sharma

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