Meriam, Kraige & Bolton — Plane Kinematics of Rigid Bodies: Problem 5_119

5/119 The bar \( AB \) from Prob. 5/61 is repeated here. If the velocity of point \( A \) is \( 3\text{ m/s} \) to the right and is constant for an interval including the position shown, determine the tangential acceleration of point \( B \) along its path and the angular acceleration of the bar. Reference to Prob. 5/61: At the instant represented, the velocity of point \( A \) of the \( 1.2\text{-m} \) bar is \( 3\text{ m/s} \) to the right. The bar \( AB \) has length \( L = 1.2\text{ m} \). Point \( B \) moves along a circular guide of radius \( r = 0.5\text{ m} \). At the instant shown, the radius of the circular guide makes an angle of \( 60^\circ \) with the horizontal, and the bar \( AB \) makes an angle of \( 30^\circ \) with the horizontal.