in Theory of Machines recategorized by
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A solid disc of radius $r$ rolls without slipping on a horizontal floor with angular velocity $\omega$ and angular acceleration $\alpha$. The magnitude of the acceleration of the point of contract on the disc is

  1. $zero$
  2. $r \alpha$
  3. $\sqrt{(r \alpha)^2 + (r \omega^2)^2}$
  4. $r \omega^2$
in Theory of Machines recategorized by
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