Rotational MotionHard
Question
A non uniform rod OA of liner mass density λ = λ0x (λ0 = co nst.) is suspended from ceiling with hinge joint O & light string as shown in figure. Find the angular acceleration of rod just after the string is cut
Options
A.
B.
C.
D.None of these
Solution
Centre of mass of the rod
= C.M. from ′O′ =
∴ C.M. =
L from O
Moment of inertia about O is
I =
∴ Angular acceleration
= C.M. from ′O′ =
∴ C.M. =
L from OMoment of inertia about O is
I =
∴ Angular acceleration
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