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Homework Statement
The disk rolls without slipping on the horizontal surface, and at the instant represented, the center O has the velocity v_{O} = 2.2 m/s and acceleration a_{O} = 5.5 m/s^{2} with directions shown in the figure. For this instant, the particle A has the indicated speed u = 3.2 m/s and time rate of change of speed = 6.6 m/s^{2}, both relative to the disk with directions shown in the figure. Determine the absolute velocity v_{A} and acceleration a_{A} of particle A.
I have attached an image of the question
Homework Equations
V_{A} = V_{O} + wXr + V_{rel}
The Attempt at a Solution
I'm honestly confused as to how to start this question. I'm not given the angular velocity so initially I tried to solve for it.
v = wXr
I know that the velocity at point O is 2.2i but how should I determine r? Or should I use the velocity at A instead?
Any help would be appreciated.
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