A particle name 'A' moves along a circle of Radius 50cm so that its radius vector r relative to the point O rotates with the constant angular velocity=0.40 rad/s. Find the module of the velocity of particle, and the modulus and the direction of its total acceleration.

R=0.50 m, 

ω=0.40 rad/s

θ=θ'/2

ω'=2ω

v'=2ωR=.40m/s

a=ω2R

a'=ω'2R=(2ω)2R=4ω2R=.32m/s2

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