Homework H$\mathrm{.}3.$B

Given: An L$-$shaped telescoping arm is pinned to ground at point O$.$ End A of the arm is con$-$

strained to move within a stationary circular slot with a constant speed of $v_A.$ At the instant

shown, the arm is oriented horizontally with end A located immediately to the left of the center C

of the circular slot. A set of $xyz$ axes are attached to section OB of the telescoping arm, with an

observer also attached to this section of the arm.

Find: Determine the angular velocity and angular acceleration of the arm. Write your answers as

vectors.