v Part A The anglular velocity of a process control motor is 7 _ 2 . . (13 2 t ) rad/s, where t '5 In seconds. At what time does the motor reverse direction? Express your answer to two significant figures and include the appropriate units. V PartB Through what angle does the motor tum between t =0 3 and the instant at which it reverses direction? Express your answer In radians to two signicant figures. A24) A9 = rad Part A The figure (Figure 1) shows three ropes tied together in a knot. One of your friends pulls on a rope with 3.0 units of force and another pulls on a second rope with 5.0 units of force. How hard must you pull on the third rope to keep the knot from moving? For help with math skills, you may want to review: Express your answer using two significant figures. Resolving Vector Components IVO AEQ Determining the Angle of a Vector F units of force Submit Request Answer Part B In what direction must you pull on the third rope to keep the knot from moving? Express your answer in degrees to two significant figures. IVOAEQ 6 0 ] ? clockwise from the rightward direction Submit Request Answer Figure Provide Feedback Next > 5.0 units of force 120 Knot 3.0 units of force