Answer Happy

03. The simplified crawler crane shown in Fig. Q3 is composed of a rode OA of constant length 0A = Sm and a hook (on C) able to translate in the vertical direction thanks to two sheaves located in A and C. The crawler crane wants to pick up a wooden box from the floor and to move it in a higher position. To do that, the rod OA rotates counterclockwise with an angular velocity, 0 = sin(t) rad/s. The hook moves vertically with a speed of r = t?m/s. The initial conditions (i.e., at t=0) are: 0 = 0,1 = 0. At @ = 45°, determine: a) [10] The magnitude of the velocity of the hook. ws The magnitude of the acceleration of the hook. b) [10] А r(t) ООООО)