A uniform thin flat isolated disc is floating in space. It has radius R and mass m. A force F 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 :
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a
acceleration of the centre of the disc is F/m
b
angular acceleration of the disc is F/mR
c
acceleration of leftmost point on the disc is zero
d
point which is instantaneously unaccelerated is the rightmost point