(b) The rotational kinetic energy is 2rotrot2212(20J)=2.4 rad/s27kgmKKIIωω=¡==⋅The linear speed of the end Bis given by (2.4 rad/s)(3.00 m) 7.2 m/sBABvrω=, where rABis the distance between Aand B.(c) The maximum angle θis attained when all the rotational kinetic energy is transformed into potential energy. Moving from the vertical position (θ = 0) to the maximum angle , the center of mass is elevated by (1 cos )ACydΔ=−, where dAC= 1.00 m is the distance
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