A wheel is rolling without slipping on a horizontal plane with velocity `v` and acceleration `a` of centre of mass as shown in figure. Acceleration at

Options

A. A is vertically upwards
B. B may be vertically downwards
C. C cannot be horizontal
D. A point on the rim may be horizontal leftwards.

Explanation

Net acceleration of any point on the rim is vector sum of `a,Romega^(2)` and `Ralpha` with `a=Ralpha`
`a_(A)=Romega^(2)to` vertically upwards
if `a=Romega^(2),a_(B)` is vertically downwards and so on.