2 3 4 5 FIGURE Q7.17

Link 2 is isolated from a kinematic diagram and shown in the figure below. The link is rotating counterclockwise at a rate of 263 rpm. Determine the velocity of points A and B. Use y = 53° and ẞ= 72° A 8" γ B B 18" Enter the angular velocity, rounded to two decimal places, in rad/s. Answer: Check Enter the speed of point A, rounded to the nearest unit, in in/s. Answer: your answer must be a positive acute angle Check

You stand on a turn-table with arms extended out horizontally, as shown in the figure below. In each hand, she holds an 8 kg weight. In this initial state, your professor and the turn-table are rotating at a constant rate of 9 rpm. Note that each weight is held 85 cm from the axis of rotation. Your professor brings her arms, and the weights, inwards towards her axis of rotation, as shown in the figure. What is the final rotational speed, in rpm, of your professor on the turn- table? You can assume that the weights are located on the axis of rotation in this final state. Wi Wt inital rinal State stüte The turn-table has a moment of inertia of 0.31 kg m^2. Your mated as a solid cylinder of uniform density with a mass of 65 kg and a radius of 16 cm. You can neglect the mass of the arms. assume that the weights can be approximated as point masses. body can be approxi-

Please answer question 2