Physics, asked by MizzCupid, 3 months ago

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A particle of mass m is rigidly attached at A to a ring of mass 3 m and radius r .The system is released from rest and rolls without sliding .The angular acceleration of ring just after release is?​

Answers

Answered by brainly1900
2

Explanation:

Moment of intertial of the system is 

I=3mr2+mr2=4mr2

using τ=I∝=4mr2     ...(1)

Torque by force around O is

τ=mgr      ...(ii)

comparing (i) and (ii)

∝4mr2=mgr

∝=4rg

Answered by vikrantvikrantchaudh
2

Explanation:

Moment of intertial of the system is

I=3mr

2

+mr

2

=4mr

2

using τ=I∝=4mr

2

...(1)

Torque by force around O is

τ=mgr ...(ii)

comparing (i) and (ii)

∝4mr

2

=mgr

∝=

4r

g

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