A metal ring of mass m and radius R is placed on a smooth horizontal table and is set rotating a...

Question From - Cengage BM Sharma MECHANICS 1 NEWTON'S LAWS OF MOTION 2 JEE Main, JEE Advanced, NEET, KVPY, AIIMS, CBSE, RBSE, UP, MP, BIHAR BOARD
QUESTION TEXT:-
A metal ring of mass m and radius R is placed on a smooth horizontal table and is set rotating about its own axis in such a way that each part of the ring moves with a speed v. Find the tension in the ring.
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[@busyhacker3286]

Is it necessary to devide it into two parts (theta 1 and theta 2.....
Can't it be done by taking only single part (theta)?

[@IITJEEPHODNAHAI]

then how will u cancel cos theta component

[@ToHereCan]

How can there be tension in the ring because wouldn't it cancel out with the tension coming from the other way round the ring if that makes sense? I mean because it's not a rod or string it's one whole connected ring so there are no distinct ends so how can there be a tension throughout it without it cancelling out itself?

[@anishbanerjee1642]

Can you please explain the physical orientation of the problem with an arrangement drawing.
My questions/doubt s are as follows-
1) Is the ring not moving over the table like bicycle.
OR
The ring is made to rotate in a particular point in table about its own axis ?
2) are these tension T external tangential tension force applied so that ring always in contact with table?

[@serenadevi3636]

it is moving along its own axis , suppose a massless rod is passing through its cantre towards y axis , we are viewing the ring from top it is lying flat on the table means its plane is parallel to table surface

[@VivekYadav-ds8oz]

You will understand the question better if you assume that this rod is rotated in space.

[@aaryatiwari4776]

T toh strting me lagta h na , yaha toh string nahi h

[@anilsoni5037]

Good

[@ajgamerdelight1024]

😢

[@ShilpiSeal-h7e]

Need to improve your explanation skills.

[@ajgamerdelight1024]

Isse bahiyaat explanation Aaj Tak nhi dekha