The boom AB of the crane is rotating about the z axis with an angular velocity of ωz = 0.75 rad/s, which is increasing at ώz = 2 rad/s2. At the same instant, θ = 60° and the boom is rotating upward at θ = 0.5 rad/s2, which is increasing at θ = 0.75 rad/s2. Determine the velocity and acceleration of the tip B of the boom at this instant.
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