A uniform thin flat isolated disc is floating in space. It has radius `R` and mass `m` . A force is applied to it at a distance `d = (R/2)` from the centre in the `y`-direction. Treat this problem as two-dimensional. Just after the force is applied:

Options

A. acceleration of the centre of the disc is `F//m`.
B. angular acceleration of the disk is `F//mR`.
C. acceleration of leftmost point on the, disc is zero
D. point which is instantaneously unaccelerated is the rightmost point.

Answer

A, B, C

Explanation

`F=ma`……….i

`F R/2=1/2mR^(2)alpha`…………ii
`aP=a-alphaR=0`