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CBSE Class 11-science Answered

A couple of 200 N m acts on a body to rotate it about an axis about which its moment of inertia is 1000kgm^2 . Find the angle through which the body rotates in first 10 sec
Asked by Drishya Subramanian | 16 Nov, 2014, 06:56: PM
answered-by-expert Expert Answer
begin mathsize 14px style Given : Couple comma space straight tau equals 200 space Nm Moment space of space Inertia comma space straight I equals 1000 space kgm squared straight t equals 10 space sec Initial space angular space velocity comma space straight w subscript 0 equals 0 straight tau equals Iα straight alpha equals straight tau over straight I equals 200 over 1000 equals 0.2 space rad divided by straight s squared We space have comma straight theta equals straight w subscript 0 straight t plus 1 half αt squared straight theta equals 1 half αt squared equals 1 half cross times 0.2 cross times 10 squared straight theta equals 10 space rad the space angle space 10 space rad space through space which space the space body space rotates space in space first space 10 space sec. end style
Answered by Priyanka Kumbhar | 17 Nov, 2014, 11:16: AM

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