Problem 1.43

A particle \(A\) moves along a circle of radius \(R=50 \mathrm{~cm}\) so that its radius vector relative to the point \(O\) (Fig. 1.5 ) rotates with the constant angular velocity \(\omega=0.40 \mathrm{rad} / \mathrm{s} .\) Find the modulus of the velocity of the particle, and the modulus and direction of its total acceleration.