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Grade 11Mechanics

A rod of length L is hinged from one end.It is brougt to horizontal position and then released. the angular velocity of the rod when it is in vertical positon

Profile image of debadutta mishra
15 Years agoGrade 11
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1 Answer

Profile image of vikas askiitian expert
15 Years ago

wrt initial position of rod , when roD is verticle then center of mass of rod has fallen a height of L/2.....

now , applying conservation of energy

  change in (kE) = difference in potential energy

               IW2/2 = mgdh

              (mL2/3)(W2/2) = mg(L/2)                   

             W =(3g/L)1/2

 Irod = mL2/3 , dh = L/2

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