# Instantaneous centre of rotation

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 ?

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

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 ?