Instantaneous centre of rotation

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The discussion revolves around the concept of the instantaneous center of rotation and its relationship with torque. It is clarified that the instantaneous axis of rotation is at rest and does not experience angular acceleration. Pseudo torque arises when the point about which torque is calculated is accelerating, particularly in scenarios involving both translation and rotation. The conversation questions how angular speed can increase without a force providing torque and the implications for the location of the instantaneous axis of rotation. Understanding these dynamics is crucial for accurately applying torque equations in rotational motion scenarios.
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Tell me- in general
It is possible that -while writing torque equation about instant centre of rotation, we may get a pseudo torque term
That is instant centre of rotation may have some angular acceleration
Am I right ?
 
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Shreyas Samudra said:
Tell me- in general
It is possible that -while writing torque equation about instant centre of rotation, we may get a pseudo torque term

No . Instantaneous axis of rotation means the axis is at rest . It is not accelerating .

Pseudo torque comes in picture when the point about which the torque equation is written is accelerating .
 
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what if a bar is moving on frictionless floor (translating + rotating) and such that its angular speed is increasing ,
so instant centre is to have some angular acceleration
 
Shreyas Samudra said:
what if a bar is moving on frictionless floor (translating + rotating) and such that its angular speed is increasing ,
so instant centre is to have some angular acceleration

How is the angular speed increasing ? Which force is providing torque ? Where do you think is the location of instantaneous axis of rotation ?
 

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