The correct option is
D some points on the rim may be horizontal leftwards
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/611119/original_Q06.png)
Tangential acceleration =
rα
Linear acceleration=
a
Centripetal acceleration =
v2/r
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/617111/original_Capture.PNG)
At point A having acceleration in upwards direction.
hence, option A is correct.
Option B:
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/617114/original_Capture.PNG)
In a condition when centripetal acceleration is equal to linear acceleration body try to move vertically downwards.
Hence, option B is also correct.
Option C:
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/617115/original_Capture.PNG)
at point C tengential acceleration and linear acceleration are in a same direction. Where as no components in vertically upwards direction.
Hence, option C is also correct.
Option D:
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/617119/original_Capture.PNG)
At a point betwen A and B there have some probability when vertical component of
v2/R cancel
rα, hence net acceleration will be in horizontal leftwards.
So, option D is correct.