Questions
A uniform disc of mass M and radius R is supported vertically by a pivot at its periphery as shown. A particle of mass M is fixed to the rim and raised to the highest point above the centre. The system is released from rest and it can rotate about pivot freely. The angular speed of the system when it attached object is directly beneath the pivot, is
detailed solution
Correct option is A
Mg(2R)=1232MR2+M(2R)2ω24MgR=114MR2ω2⇒∴ω=16g11RTalk to our academic expert!
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A uniform thin rod of length l and mass m is hinged at a distance l/4 from one of the end and released from horizontal position as shown in Fig. The angular velocity of the rod as it passes the vertical position is
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