Non-uniform acceleration in Mechanics Circular Motion (1 Viewer)

[Mechanic]

Is Non-uniform acceleration in Mechanics Circular Motion in the syllabus? And if so what is the process? thanks

 

[barbernator]

nope, not in the syllabus as far as i know. If it was, the path would not have to be just a circle, but it could be.

not totally sure though, anyone help me out?

 

[bleakarcher]

nope, not in the syllabus. if there was non uniform acceleration the path traced wouldn't be a circle, rather an ellipse or another shape

No well, given suitable conditions, the path traced by the object in motion can still be a circle. In non-uniform acceleration, the centripetal acceleration is no longer constant and so the object's velocity is changing given that it still moves in the same circle. But yeah, it's not in the syllabus.

 

[Mechanic]

also with mechanics, especially conical pendulum, do we have to show how we get theta when we resolve forces?

 

[asianese]

No just draw it in your diagram.

 

[billym]

You may need to do some very basic analysis of the forces involved in non-uniform acceleration, and the syllabus actually makes reference to the normal and tangential components of acceleration (note that the tangential component of acceleration is the component that makes the magnitude of angular velocity vary).

See last point in the following syllabus dot point:



In particular, have a look at Q5 from the 2000 HSC, which touches on the idea of non-uniform angular velocity.